SlideShare a Scribd company logo
1 of 15
Download to read offline
Electricity
Parallel and Series Circuit (HBL 2)




           • Electric Circuits
           • What makes a Bulb brighter?
Electric Circuits
• Closed Circuit
  Electric current flows through it.

• Open Circuit
  There is a break.
  Electric current does not flow through it.
Electric Circuits
• Circuit diagrams record the components
  and connections of a circuit in a simple
  and clear way.
• Basic Circuit symbols:

    battery

                            bulb

     2 batteries


                             switch
      wire
Components of an
             Electric Circuit
• Actual circuit versus Circuit diagram
                         battery
     wire

                battery holder


            switch
                                    bulb
                                   wire
                                             battery


                                    switch       bulb
In a circuit, the brightness of a bulb
depends on:
a) The number of batteries used
    (the greater the number of batteries,
    the brighter the bulb).
b) Arrangement of components of the
    circuit.
Factors that affect the
         brightness of a bulb:
1. The number of batteries (in series)

      Single battery       Multiple batteries




         dimmer                 brighter
More ……
• As more batteries are added in series,
  more current is available and the bulbs
  become brighter.
• When too many batteries are added, the
  current is so great that one of the bulbs
  may blow/fuse (too much heat is made by
  the filament that it burns out).
Factors that affect the
           brightness of a bulb:
2. The arrangement of batteries

     Batteries arranged   Batteries arranged
         in parallel           in series




          dimmer                brighter
More ……
• Batteries need to be connected with the poles
  in the proper direction for current to flow –
  positive end of one battery needs to be joined
  to the negative end of another.
• When the number of components is the same,
  the bulb of the circuit with batteries arranged in
  series is brighter than that in parallel.
• However, if one battery is removed, only the
  bulb of the circuit with batteries arranged in
  parallel remains lighted up.
Factors that affect the
         brightness of a bulb:
3. The number of bulbs

       Single bulb       Multiple bulbs




        brighter
                            dimmer
More ……
• The greater the number of bulbs, the
  dimmer they are.
Factors that affect the
         brightness of a bulb:
4. The arrangement of bulbs

     Bulbs arranged       Bulbs arranged
       in Parallel           in Series




        brighter              dimmer
Bulbs in series vs
                   Bulbs in parallel
 Points for                           Arrangement of bulbs in:
comparison                    Series                             Parallel
Number of                 Only one path;                    2 or more paths;
paths for the         current passes through              current splits up and
electric current   components one after another        passes through each branch
                                                            at the same time;
                                                         paths are independent
                                                              of each other
Brightness
                              Dimmer                              Brighter
of bulbs
If one bulb is       Electric current cannot flow      Electric current can still flow
removed or             through the circuit, the       through the other path and the
damaged            remaining bulb will not light up       other bulb still lights up
Application                       -                      Used in the connection of
                                                      circuits in the houses; twinkling
                                                      lights, bumper cars in fun fairs
Application ……
• All the lights in our houses were
  connected in series, then we have to turn
  on all the lights at the same time. If one
  bulb blows, then all the bulbs will not light
  up. Hence household lighting and wiring
  is arranged in parallel. Each bulb has an
  individual switch to control it.
• Christmas Tree lightings
The End

More Related Content

What's hot

Series & Parallel
Series & ParallelSeries & Parallel
Series & Parallelfourangela
 
Series and parallel circuits
Series and parallel circuitsSeries and parallel circuits
Series and parallel circuitsnovilalala
 
Ppt Conservation Of Energy
Ppt Conservation Of EnergyPpt Conservation Of Energy
Ppt Conservation Of Energyffiala
 
Electricity (ppt)
Electricity (ppt)Electricity (ppt)
Electricity (ppt)Stanley Ang
 
What are conductors_and_insulators
What are conductors_and_insulatorsWhat are conductors_and_insulators
What are conductors_and_insulatorsMayte Pelegrin Salas
 
Conductors and insulators
Conductors and insulatorsConductors and insulators
Conductors and insulatorsSohamMantre
 
Electricity & electric circuits
Electricity & electric circuitsElectricity & electric circuits
Electricity & electric circuitsthompsonj1064
 
Electricity
ElectricityElectricity
ElectricityIsabelop
 
Conductors and insulators
Conductors and insulatorsConductors and insulators
Conductors and insulatorsMr. M
 
Basic electricity
Basic electricityBasic electricity
Basic electricityAdymtz
 
Series and Parallel Circuits
Series and Parallel CircuitsSeries and Parallel Circuits
Series and Parallel CircuitsNurul Fadhilah
 
Slide unit 5 electricity
Slide unit 5 electricitySlide unit 5 electricity
Slide unit 5 electricityMc Zuliza
 
Circuit components
Circuit componentsCircuit components
Circuit componentscristalbeam
 
Electrical Energy
Electrical EnergyElectrical Energy
Electrical EnergySarah Jones
 

What's hot (20)

Electricity lesson
Electricity lessonElectricity lesson
Electricity lesson
 
Series & Parallel
Series & ParallelSeries & Parallel
Series & Parallel
 
Series and parallel circuits
Series and parallel circuitsSeries and parallel circuits
Series and parallel circuits
 
Ppt Conservation Of Energy
Ppt Conservation Of EnergyPpt Conservation Of Energy
Ppt Conservation Of Energy
 
Electricity (ppt)
Electricity (ppt)Electricity (ppt)
Electricity (ppt)
 
What are conductors_and_insulators
What are conductors_and_insulatorsWhat are conductors_and_insulators
What are conductors_and_insulators
 
Conductors and insulators
Conductors and insulatorsConductors and insulators
Conductors and insulators
 
Electricity
ElectricityElectricity
Electricity
 
Electricity
ElectricityElectricity
Electricity
 
Electricity & electric circuits
Electricity & electric circuitsElectricity & electric circuits
Electricity & electric circuits
 
Electricity
ElectricityElectricity
Electricity
 
Conductors and insulators
Conductors and insulatorsConductors and insulators
Conductors and insulators
 
Basic electricity
Basic electricityBasic electricity
Basic electricity
 
Electricity at Home
Electricity at HomeElectricity at Home
Electricity at Home
 
Series and Parallel Circuits
Series and Parallel CircuitsSeries and Parallel Circuits
Series and Parallel Circuits
 
Electric circuits
Electric circuitsElectric circuits
Electric circuits
 
Slide unit 5 electricity
Slide unit 5 electricitySlide unit 5 electricity
Slide unit 5 electricity
 
Circuit components
Circuit componentsCircuit components
Circuit components
 
Electrical Energy
Electrical EnergyElectrical Energy
Electrical Energy
 
Electricity grade 6
Electricity grade 6Electricity grade 6
Electricity grade 6
 

Similar to Electricity Parallel And Series Circuit (Hbl Wk2)

Ch 18 electricity
Ch 18   electricityCh 18   electricity
Ch 18 electricityStanley Ang
 
Current Electricity Presentation
Current Electricity PresentationCurrent Electricity Presentation
Current Electricity Presentation14yamaka
 
Physics electricity
Physics electricityPhysics electricity
Physics electricity14yamaka
 
Current electricity
Current electricityCurrent electricity
Current electricity14choiyu
 
Introducing electricity-1282368962-phpapp01
Introducing electricity-1282368962-phpapp01Introducing electricity-1282368962-phpapp01
Introducing electricity-1282368962-phpapp01Eric Ball
 
Maleny electricity
Maleny electricityMaleny electricity
Maleny electricitymaleny17
 
Electrical circuits
Electrical circuitsElectrical circuits
Electrical circuitsthemassmaker
 
Science 5 chapter 4 electricity in your life
Science 5 chapter 4 electricity in your lifeScience 5 chapter 4 electricity in your life
Science 5 chapter 4 electricity in your lifeHakan Gökyer
 
Series and parallel circuits, venn diagram
Series and parallel circuits, venn diagramSeries and parallel circuits, venn diagram
Series and parallel circuits, venn diagramjohnwest
 
Electric current
Electric currentElectric current
Electric currentPawitra2
 
CH12 class 7 electricity ppt class7.pptx
CH12 class 7 electricity ppt class7.pptxCH12 class 7 electricity ppt class7.pptx
CH12 class 7 electricity ppt class7.pptxGulshanGoyal12
 
Circuits.pptx
Circuits.pptxCircuits.pptx
Circuits.pptxXgApaz
 
Factors affecting current flow
Factors affecting current flowFactors affecting current flow
Factors affecting current flowRaffia Siddique
 
Electric Field, Electric Circuit and Electric Current
Electric Field, Electric Circuit and Electric CurrentElectric Field, Electric Circuit and Electric Current
Electric Field, Electric Circuit and Electric Currentsalvie alvaro
 
Electricity 3.pptx
Electricity 3.pptxElectricity 3.pptx
Electricity 3.pptxDevikaMani3
 
Series parallel
Series parallelSeries parallel
Series parallelFaye
 
Intro to electricity
Intro to electricityIntro to electricity
Intro to electricityTrnka
 
design of the simple electric circuit
design of the simple electric circuitdesign of the simple electric circuit
design of the simple electric circuitsahil saifi
 
electricityppt-120307204317-phpapp02.pptx
electricityppt-120307204317-phpapp02.pptxelectricityppt-120307204317-phpapp02.pptx
electricityppt-120307204317-phpapp02.pptxmanishkumar23974
 

Similar to Electricity Parallel And Series Circuit (Hbl Wk2) (20)

Ch 18 electricity
Ch 18   electricityCh 18   electricity
Ch 18 electricity
 
Current Electricity Presentation
Current Electricity PresentationCurrent Electricity Presentation
Current Electricity Presentation
 
Physics electricity
Physics electricityPhysics electricity
Physics electricity
 
Current electricity
Current electricityCurrent electricity
Current electricity
 
Introducing electricity-1282368962-phpapp01
Introducing electricity-1282368962-phpapp01Introducing electricity-1282368962-phpapp01
Introducing electricity-1282368962-phpapp01
 
Maleny electricity
Maleny electricityMaleny electricity
Maleny electricity
 
Electrical circuits
Electrical circuitsElectrical circuits
Electrical circuits
 
Science 5 chapter 4 electricity in your life
Science 5 chapter 4 electricity in your lifeScience 5 chapter 4 electricity in your life
Science 5 chapter 4 electricity in your life
 
Series and parallel circuits, venn diagram
Series and parallel circuits, venn diagramSeries and parallel circuits, venn diagram
Series and parallel circuits, venn diagram
 
Electric current
Electric currentElectric current
Electric current
 
chap_23.ppt
chap_23.pptchap_23.ppt
chap_23.ppt
 
CH12 class 7 electricity ppt class7.pptx
CH12 class 7 electricity ppt class7.pptxCH12 class 7 electricity ppt class7.pptx
CH12 class 7 electricity ppt class7.pptx
 
Circuits.pptx
Circuits.pptxCircuits.pptx
Circuits.pptx
 
Factors affecting current flow
Factors affecting current flowFactors affecting current flow
Factors affecting current flow
 
Electric Field, Electric Circuit and Electric Current
Electric Field, Electric Circuit and Electric CurrentElectric Field, Electric Circuit and Electric Current
Electric Field, Electric Circuit and Electric Current
 
Electricity 3.pptx
Electricity 3.pptxElectricity 3.pptx
Electricity 3.pptx
 
Series parallel
Series parallelSeries parallel
Series parallel
 
Intro to electricity
Intro to electricityIntro to electricity
Intro to electricity
 
design of the simple electric circuit
design of the simple electric circuitdesign of the simple electric circuit
design of the simple electric circuit
 
electricityppt-120307204317-phpapp02.pptx
electricityppt-120307204317-phpapp02.pptxelectricityppt-120307204317-phpapp02.pptx
electricityppt-120307204317-phpapp02.pptx
 

More from xnpsp5

Electrical Conductors And Insulators
Electrical Conductors And InsulatorsElectrical Conductors And Insulators
Electrical Conductors And Insulatorsxnpsp5
 
P5cl Essay Wk3fri
P5cl Essay Wk3friP5cl Essay Wk3fri
P5cl Essay Wk3frixnpsp5
 
P5hcl Essay Wk3fri
P5hcl Essay Wk3friP5hcl Essay Wk3fri
P5hcl Essay Wk3frixnpsp5
 
P5 Fdn Plant System(Revision) Hb Lwk2
P5 Fdn Plant System(Revision) Hb Lwk2P5 Fdn Plant System(Revision) Hb Lwk2
P5 Fdn Plant System(Revision) Hb Lwk2xnpsp5
 
P5 Fdn Plant System(Revision) Hb Lwk2
P5 Fdn Plant System(Revision) Hb Lwk2P5 Fdn Plant System(Revision) Hb Lwk2
P5 Fdn Plant System(Revision) Hb Lwk2xnpsp5
 
P5 CL Slides
P5 CL SlidesP5 CL Slides
P5 CL Slidesxnpsp5
 
P5 HCL Slides
P5 HCL SlidesP5 HCL Slides
P5 HCL Slidesxnpsp5
 
P4 CL Slides
P4 CL SlidesP4 CL Slides
P4 CL Slidesxnpsp5
 

More from xnpsp5 (8)

Electrical Conductors And Insulators
Electrical Conductors And InsulatorsElectrical Conductors And Insulators
Electrical Conductors And Insulators
 
P5cl Essay Wk3fri
P5cl Essay Wk3friP5cl Essay Wk3fri
P5cl Essay Wk3fri
 
P5hcl Essay Wk3fri
P5hcl Essay Wk3friP5hcl Essay Wk3fri
P5hcl Essay Wk3fri
 
P5 Fdn Plant System(Revision) Hb Lwk2
P5 Fdn Plant System(Revision) Hb Lwk2P5 Fdn Plant System(Revision) Hb Lwk2
P5 Fdn Plant System(Revision) Hb Lwk2
 
P5 Fdn Plant System(Revision) Hb Lwk2
P5 Fdn Plant System(Revision) Hb Lwk2P5 Fdn Plant System(Revision) Hb Lwk2
P5 Fdn Plant System(Revision) Hb Lwk2
 
P5 CL Slides
P5 CL SlidesP5 CL Slides
P5 CL Slides
 
P5 HCL Slides
P5 HCL SlidesP5 HCL Slides
P5 HCL Slides
 
P4 CL Slides
P4 CL SlidesP4 CL Slides
P4 CL Slides
 

Recently uploaded

How to Conduct a Service Gap Analysis for Your Business
How to Conduct a Service Gap Analysis for Your BusinessHow to Conduct a Service Gap Analysis for Your Business
How to Conduct a Service Gap Analysis for Your BusinessHelp Desk Migration
 
Rakhi sets symbolizing the bond of love.pptx
Rakhi sets symbolizing the bond of love.pptxRakhi sets symbolizing the bond of love.pptx
Rakhi sets symbolizing the bond of love.pptxRakhi Bazaar
 
Entrepreneurial ecosystem- Wider context
Entrepreneurial ecosystem- Wider contextEntrepreneurial ecosystem- Wider context
Entrepreneurial ecosystem- Wider contextP&CO
 
5-Step Framework to Convert Any Business into a Wealth Generation Machine.pdf
5-Step Framework to Convert Any Business into a Wealth Generation Machine.pdf5-Step Framework to Convert Any Business into a Wealth Generation Machine.pdf
5-Step Framework to Convert Any Business into a Wealth Generation Machine.pdfSherl Simon
 
decentralized Launchpad providing a safe and transparent fundraising
decentralized Launchpad providing a safe and transparent fundraisingdecentralized Launchpad providing a safe and transparent fundraising
decentralized Launchpad providing a safe and transparent fundraisingrectinajh
 
Excvation Safety for safety officers reference
Excvation Safety for safety officers referenceExcvation Safety for safety officers reference
Excvation Safety for safety officers referencessuser2c065e
 
1911 Gold Corporate Presentation Apr 2024.pdf
1911 Gold Corporate Presentation Apr 2024.pdf1911 Gold Corporate Presentation Apr 2024.pdf
1911 Gold Corporate Presentation Apr 2024.pdfShaun Heinrichs
 
digital marketing , introduction of digital marketing
digital marketing , introduction of digital marketingdigital marketing , introduction of digital marketing
digital marketing , introduction of digital marketingrajputmeenakshi733
 
Cracking the ‘Skill gap analysis' Code.pptx
Cracking the ‘Skill gap analysis' Code.pptxCracking the ‘Skill gap analysis' Code.pptx
Cracking the ‘Skill gap analysis' Code.pptxWorkforce Group
 
Andrii Rodionov: What can go wrong in a distributed system – experience from ...
Andrii Rodionov: What can go wrong in a distributed system – experience from ...Andrii Rodionov: What can go wrong in a distributed system – experience from ...
Andrii Rodionov: What can go wrong in a distributed system – experience from ...Lviv Startup Club
 
EQX-PPT-20240405-CorporateDeck-slideshare
EQX-PPT-20240405-CorporateDeck-slideshareEQX-PPT-20240405-CorporateDeck-slideshare
EQX-PPT-20240405-CorporateDeck-slideshareEquinox Gold Corp.
 
Introducing the AI ShillText Generator A New Era for Cryptocurrency Marketing...
Introducing the AI ShillText Generator A New Era for Cryptocurrency Marketing...Introducing the AI ShillText Generator A New Era for Cryptocurrency Marketing...
Introducing the AI ShillText Generator A New Era for Cryptocurrency Marketing...PRnews2
 
ISO 37002:2021 (Whistleblowing Management Systems) Awareness Training
ISO 37002:2021 (Whistleblowing Management Systems) Awareness TrainingISO 37002:2021 (Whistleblowing Management Systems) Awareness Training
ISO 37002:2021 (Whistleblowing Management Systems) Awareness TrainingOperational Excellence Consulting
 
How Generative AI Is Transforming Your Business | Byond Growth Insights | Apr...
How Generative AI Is Transforming Your Business | Byond Growth Insights | Apr...How Generative AI Is Transforming Your Business | Byond Growth Insights | Apr...
How Generative AI Is Transforming Your Business | Byond Growth Insights | Apr...Hector Del Castillo, CPM, CPMM
 
Jewish Resources in the Family Resource Centre
Jewish Resources in the Family Resource CentreJewish Resources in the Family Resource Centre
Jewish Resources in the Family Resource CentreNZSG
 
Device Management via Intune : Balancing Security and Flexibility
Device Management via Intune : Balancing Security and FlexibilityDevice Management via Intune : Balancing Security and Flexibility
Device Management via Intune : Balancing Security and FlexibilityManagedms365
 
GUIDELINES ON USEFUL FORMS IN FREIGHT FORWARDING (F) Danny Diep Toh MBA.pdf
GUIDELINES ON USEFUL FORMS IN FREIGHT FORWARDING (F) Danny Diep Toh MBA.pdfGUIDELINES ON USEFUL FORMS IN FREIGHT FORWARDING (F) Danny Diep Toh MBA.pdf
GUIDELINES ON USEFUL FORMS IN FREIGHT FORWARDING (F) Danny Diep Toh MBA.pdfDanny Diep To
 
Mastering performance conversations presented by Heli Nehama Ozery and hosted...
Mastering performance conversations presented by Heli Nehama Ozery and hosted...Mastering performance conversations presented by Heli Nehama Ozery and hosted...
Mastering performance conversations presented by Heli Nehama Ozery and hosted...dawncurless
 
Welding Electrode Making Machine By Deccan Dynamics
Welding Electrode Making Machine By Deccan DynamicsWelding Electrode Making Machine By Deccan Dynamics
Welding Electrode Making Machine By Deccan DynamicsIndiaMART InterMESH Limited
 

Recently uploaded (20)

How to Conduct a Service Gap Analysis for Your Business
How to Conduct a Service Gap Analysis for Your BusinessHow to Conduct a Service Gap Analysis for Your Business
How to Conduct a Service Gap Analysis for Your Business
 
Rakhi sets symbolizing the bond of love.pptx
Rakhi sets symbolizing the bond of love.pptxRakhi sets symbolizing the bond of love.pptx
Rakhi sets symbolizing the bond of love.pptx
 
Entrepreneurial ecosystem- Wider context
Entrepreneurial ecosystem- Wider contextEntrepreneurial ecosystem- Wider context
Entrepreneurial ecosystem- Wider context
 
5-Step Framework to Convert Any Business into a Wealth Generation Machine.pdf
5-Step Framework to Convert Any Business into a Wealth Generation Machine.pdf5-Step Framework to Convert Any Business into a Wealth Generation Machine.pdf
5-Step Framework to Convert Any Business into a Wealth Generation Machine.pdf
 
decentralized Launchpad providing a safe and transparent fundraising
decentralized Launchpad providing a safe and transparent fundraisingdecentralized Launchpad providing a safe and transparent fundraising
decentralized Launchpad providing a safe and transparent fundraising
 
GAD EIF Webinar #6 Business Cases 6 out 39
GAD EIF Webinar #6 Business Cases 6 out 39GAD EIF Webinar #6 Business Cases 6 out 39
GAD EIF Webinar #6 Business Cases 6 out 39
 
Excvation Safety for safety officers reference
Excvation Safety for safety officers referenceExcvation Safety for safety officers reference
Excvation Safety for safety officers reference
 
1911 Gold Corporate Presentation Apr 2024.pdf
1911 Gold Corporate Presentation Apr 2024.pdf1911 Gold Corporate Presentation Apr 2024.pdf
1911 Gold Corporate Presentation Apr 2024.pdf
 
digital marketing , introduction of digital marketing
digital marketing , introduction of digital marketingdigital marketing , introduction of digital marketing
digital marketing , introduction of digital marketing
 
Cracking the ‘Skill gap analysis' Code.pptx
Cracking the ‘Skill gap analysis' Code.pptxCracking the ‘Skill gap analysis' Code.pptx
Cracking the ‘Skill gap analysis' Code.pptx
 
Andrii Rodionov: What can go wrong in a distributed system – experience from ...
Andrii Rodionov: What can go wrong in a distributed system – experience from ...Andrii Rodionov: What can go wrong in a distributed system – experience from ...
Andrii Rodionov: What can go wrong in a distributed system – experience from ...
 
EQX-PPT-20240405-CorporateDeck-slideshare
EQX-PPT-20240405-CorporateDeck-slideshareEQX-PPT-20240405-CorporateDeck-slideshare
EQX-PPT-20240405-CorporateDeck-slideshare
 
Introducing the AI ShillText Generator A New Era for Cryptocurrency Marketing...
Introducing the AI ShillText Generator A New Era for Cryptocurrency Marketing...Introducing the AI ShillText Generator A New Era for Cryptocurrency Marketing...
Introducing the AI ShillText Generator A New Era for Cryptocurrency Marketing...
 
ISO 37002:2021 (Whistleblowing Management Systems) Awareness Training
ISO 37002:2021 (Whistleblowing Management Systems) Awareness TrainingISO 37002:2021 (Whistleblowing Management Systems) Awareness Training
ISO 37002:2021 (Whistleblowing Management Systems) Awareness Training
 
How Generative AI Is Transforming Your Business | Byond Growth Insights | Apr...
How Generative AI Is Transforming Your Business | Byond Growth Insights | Apr...How Generative AI Is Transforming Your Business | Byond Growth Insights | Apr...
How Generative AI Is Transforming Your Business | Byond Growth Insights | Apr...
 
Jewish Resources in the Family Resource Centre
Jewish Resources in the Family Resource CentreJewish Resources in the Family Resource Centre
Jewish Resources in the Family Resource Centre
 
Device Management via Intune : Balancing Security and Flexibility
Device Management via Intune : Balancing Security and FlexibilityDevice Management via Intune : Balancing Security and Flexibility
Device Management via Intune : Balancing Security and Flexibility
 
GUIDELINES ON USEFUL FORMS IN FREIGHT FORWARDING (F) Danny Diep Toh MBA.pdf
GUIDELINES ON USEFUL FORMS IN FREIGHT FORWARDING (F) Danny Diep Toh MBA.pdfGUIDELINES ON USEFUL FORMS IN FREIGHT FORWARDING (F) Danny Diep Toh MBA.pdf
GUIDELINES ON USEFUL FORMS IN FREIGHT FORWARDING (F) Danny Diep Toh MBA.pdf
 
Mastering performance conversations presented by Heli Nehama Ozery and hosted...
Mastering performance conversations presented by Heli Nehama Ozery and hosted...Mastering performance conversations presented by Heli Nehama Ozery and hosted...
Mastering performance conversations presented by Heli Nehama Ozery and hosted...
 
Welding Electrode Making Machine By Deccan Dynamics
Welding Electrode Making Machine By Deccan DynamicsWelding Electrode Making Machine By Deccan Dynamics
Welding Electrode Making Machine By Deccan Dynamics
 

Electricity Parallel And Series Circuit (Hbl Wk2)

  • 1. Electricity Parallel and Series Circuit (HBL 2) • Electric Circuits • What makes a Bulb brighter?
  • 2. Electric Circuits • Closed Circuit Electric current flows through it. • Open Circuit There is a break. Electric current does not flow through it.
  • 3. Electric Circuits • Circuit diagrams record the components and connections of a circuit in a simple and clear way. • Basic Circuit symbols: battery bulb 2 batteries switch wire
  • 4. Components of an Electric Circuit • Actual circuit versus Circuit diagram battery wire battery holder switch bulb wire battery switch bulb
  • 5. In a circuit, the brightness of a bulb depends on: a) The number of batteries used (the greater the number of batteries, the brighter the bulb). b) Arrangement of components of the circuit.
  • 6. Factors that affect the brightness of a bulb: 1. The number of batteries (in series) Single battery Multiple batteries dimmer brighter
  • 7. More …… • As more batteries are added in series, more current is available and the bulbs become brighter. • When too many batteries are added, the current is so great that one of the bulbs may blow/fuse (too much heat is made by the filament that it burns out).
  • 8. Factors that affect the brightness of a bulb: 2. The arrangement of batteries Batteries arranged Batteries arranged in parallel in series dimmer brighter
  • 9. More …… • Batteries need to be connected with the poles in the proper direction for current to flow – positive end of one battery needs to be joined to the negative end of another. • When the number of components is the same, the bulb of the circuit with batteries arranged in series is brighter than that in parallel. • However, if one battery is removed, only the bulb of the circuit with batteries arranged in parallel remains lighted up.
  • 10. Factors that affect the brightness of a bulb: 3. The number of bulbs Single bulb Multiple bulbs brighter dimmer
  • 11. More …… • The greater the number of bulbs, the dimmer they are.
  • 12. Factors that affect the brightness of a bulb: 4. The arrangement of bulbs Bulbs arranged Bulbs arranged in Parallel in Series brighter dimmer
  • 13. Bulbs in series vs Bulbs in parallel Points for Arrangement of bulbs in: comparison Series Parallel Number of Only one path; 2 or more paths; paths for the current passes through current splits up and electric current components one after another passes through each branch at the same time; paths are independent of each other Brightness Dimmer Brighter of bulbs If one bulb is Electric current cannot flow Electric current can still flow removed or through the circuit, the through the other path and the damaged remaining bulb will not light up other bulb still lights up Application - Used in the connection of circuits in the houses; twinkling lights, bumper cars in fun fairs
  • 14. Application …… • All the lights in our houses were connected in series, then we have to turn on all the lights at the same time. If one bulb blows, then all the bulbs will not light up. Hence household lighting and wiring is arranged in parallel. Each bulb has an individual switch to control it. • Christmas Tree lightings