The document provides information about physics concepts related to magnets, electromagnetism, and nuclear radiation. It discusses the properties of magnetic materials and magnets, induced magnetism, magnetic effects of current, electromagnets, and magnetic force. It also covers electromagnetic induction, generators, transformers, diodes, transistors, logic gates, thermionic emission, and the oscilloscope. Finally, it briefly discusses atoms and the types of nuclear radiation such as alpha particles.
Electric charges
Current
Potentialand its difference
Circuits
Heating effects
Magnetic effects
Magnetic Field Lines in straight and coiled conductors
Electromagnets
Electromagnetic Induction
Motors and Generators
Electric charges
Current
Potentialand its difference
Circuits
Heating effects
Magnetic effects
Magnetic Field Lines in straight and coiled conductors
Electromagnets
Electromagnetic Induction
Motors and Generators
Electricity Class 10 Physics Chapter Complete with FormulaeShreyaans Nahata
Hey guys!!
I give you all 'Electricity Class 10' from NCERT SCIENCE Textbook. It Contains every thing you need to study including formulas and definitions.
Please do not forget to like it if you like it!!!
With proper guidance and advice, students can get good marks in exams. IGCSE physics written by experienced writer offers various suggestions to students so that they can perform well in exams.
Electricity Class 10 Physics Chapter Complete with FormulaeShreyaans Nahata
Hey guys!!
I give you all 'Electricity Class 10' from NCERT SCIENCE Textbook. It Contains every thing you need to study including formulas and definitions.
Please do not forget to like it if you like it!!!
With proper guidance and advice, students can get good marks in exams. IGCSE physics written by experienced writer offers various suggestions to students so that they can perform well in exams.
This presentation is not mine so all credits go to Zubair Junjunia. I am sharing as this as it covers the whole content of paper 6 - Alternative to practical for CIE IGCSE Physics
but can be useful for paper 5 or other boards.
IGCSE Physics simplified is a book that has been written to help you prepare for your IGCSE Physics examinations. It has been written in a simple, bullet pointed manner focusing on the key points of the CIE 0625 Physics Syllabus
Mr Exham IGCSE - Movement In And Out Of Cellsmrexham
This is a presentation designed to help explain the section of the Edexcel IGCSE Biology course about movement in and out of cells. For more help with IGCSE Biology please visit mrexham.com
This presentation is not mine so all credits go to Zubair Junjunia. I am sharing as this as it covers the whole content of paper 6 - Alternative to practical for CIE IGCSE Chemistry
but can be useful for paper 5 or other boards.
ELECTROMAGNETISM
INTRODUCTION
The phenomenon where by electricity creates magnetism is known as electromagnetism. When an insulated wire is wrapped with round an iron nail and the ends of the wire connected to the battery the nail becomes capable of picking up iron fillings paper. This is a simple electromagnet. The nail has been magnetized by the current in the wire. Disconnecting the wire from the battery the paper clips fall off. The nail looses most of first magnetism when the current is switched off. The passage of electric current along a wire creates a magnetic field around the wire. The lines of forces due to a straight current carrying wire are circles, center on the wire on the wire. The field is strongest near the wire the direction of the magnetic field is r
Electromagnetic induction builds on the concept of magnets and magnetic fields in grade 10. Most of the work covered here is quite clear and straight forward.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
2. Brief Intro on Magnets
Magnetic material- is a type of material that
can be magnetized and is attracted to other
magnets.
Strong metals contain
1- iron
They are called
2- nickel “Ferromagnetics”
3- cobalt Iron and alloys of iron are
called ferrous. (Ferrous in
Latin means iron)
Aluminium, copper, and other
non-magnets are called non-
ferrous.
3. Properties of magnets:
• Have a magnetic field around them
• Has two poles exerting forces on other
magnets.
– Like poles repel
– Unlike poles attract
• Attract magnetic materials by inducing
magnetism in them.
4. What is induced magnetism?
Some metals like iron and steel are attracted to other
magnets because if there is a magnet near by, they
themselves get magnetized. Magnetism is INDUCED in
them.
– When steel is pulled away from a magnet, it keeps its
induced magnetism causing it to become a permanent
magnet.(hard magnet)
– When iron is pulled away from a magnet, it looses its
induced magnetism meaning that iron was only a
temporary magnet.(soft magnet)
5. Magnetic Effects of Current
• When an electric current is passed through a
wire an magnetic field is produced. The
features of this magnetic field are:
– They are circles
– Field is strongest close to the wire
– Increasing current increases strength of field.
7. Electromagnets
• These are types of magnets that can be
switched on and off.
Coils
Iron core
The strength of the magnetic field can be increased by:
- Increasing the current.
- Increasing the number of turns in the coil
8. Magnetic Relay
Metal
contacts.
• When electricity is passed through the coil end
wires, it induced a magnetic field in the iron
ROD. This attracts the iron STRIP causing both
metal contacts to touch.
9. Circuit Breaker
Circuit breaker- it is an
automatic switch cutting off
the current within a circuit if
it rises above a specified
value.
- In the case on the left, the
pull of the electromagnet has
become so strong that it has
attracted the soft iron
armature. This causes the
contacts to open and stop the
current.
- If u press the reset button,
the contacts close once again.
10. Magnetic force on the current
• Copper is a non-
magnet feels no
force of the magnet
But..
• If it has a current
passing through it,
there will obviously be
a force on the wire.
The wire moves ACROSS
Force is increased if:
the field. It is not -Current is increased
attracted to it. -Stronger magnet is used
-Length of wire in field is
increased.
12. Electric motors
An electric motor transfers electrical energy to
kinetic energy.
• A motor is made up from a coil of
wire which is positioned between
the two poles of the magnet.
• When the current flows through
the coil, it creates a magnetic field.
This magnetic field that is
produced interacts with the
magnetic field produced by the 2
permanent magnets.
• The combination of these two
magnetic fields exert a force,
pushing the wire at right angles to
the permanent magnetic field. Improve turning effect
13. Increasing Turning Effect
• Increase the current
• Use a stronger magnet
• Increase the number of turns on the coil
• Increase the area of the coil.
14. Electromagnetic Induction
• A magnetic field can be used to produce
current.
When the wire is moved across the
magnetic field a small EMF(voltage) is
created. This is called electromagnetic
induction.
“EMF is induced”
Induced EMF increased by:
-Moving wire faster
-Using stronger magnet
-Increasing length of wire.
15. Induced Currents
Fleming’s right hand rule:
Difference between the left hand and the right hand rule:
-When current causes motion the left hand rule applies
-When motion causes current the right hand rule applies
16. Generators
• The coil rotates
• Magnetic fields are cut
• EMF is generated
• Causes current to flow
• Coil rotates– upwards,
Increasing EMF:
downwards, upwards - Increasing the number of
causing the current to turns on coil
flow backwards, - Increasing area of coil
forwards, backwards. - Use stronger magnet
- Rotate coil faster
17. Coils and Transformers
• Moving magnet induces EMF
• Magnetic field SAME effect.
• Mutual induction: when coils are magnetically
linked so that changing current in one coil
causes an induced EMF in the other.
18. Simple Transformer
- Alternating current flows
through primary coil
- This sets up an altering
magnetic field in the
core.
- Coils of the secondary
coil ‘cut’ the altering
magnetic field thus
output voltage Turns in output coil inducing an alternating
= voltage in the output coil.
Input voltage Turns on input coil
19. Step-up and Step-down transformers
Step-up: this is when the
number of output coils is
greater than the number
of input coils which means
that there will be a greater
output voltage as opposed
to input voltage.
Step-down: this is when the
number of output coils is less
than the number of input coils
which means that there will be
less output voltage as opposed to
input voltage.
20. Power Through a Transformer
Input x Input = Output x Output
voltage current voltage current
22. Important electronic components
1. Resistors – keep currents + voltages at levels
desired by the electronic component
2. Capacitor – store small amounts of electric
charge
3. Diodes – allow the current to flow in only one
direction
4. Light-emittingg diodes (LED) – glow when a
small current is passed through them.
23. Continued…
5. Transistors – used to amplify signals
6. Integrated circuits(micro-chips)– contain complete circuits with :
a) Resistors
b) Transistors
c) Other components
7. Relays– electromagnetic switches.
24. Diodes
• Can be used to change AC to DC
Rectification
• Lets forward parts of the AC through but
blocks the backwards part.
• Forming a DC
Input 1 Output
resister
28. The NPN resistor
1000 ohms c 6V
b
e
• In the diagram above there are actually two circuits put together as one. The first
circuit is the one with the base and the emitter ( input circuit) and the second is
the circuit with the collector and the emitter (output circuit).
1. Two input connections joined together no current flow
2. Input the base greater than 0.6Vlamp switches on
3. 1000 ohm resister is present to protect the input to the resistor, allowing input to
be higher than 0.6V to 5V without harming transistor.
4. Little current is needed in the input circuit.
30. Thermionic Emission
• Basically what happens in thermionic emission is
that the tungsten filament is heated to 2000
degrees Celsius. Some electrons that are hot
enough escape the surface of the white hot
surface. These then pass through the vacuum and
on the screen.
31. The Oscilloscope
• The Cathode Ray Oscilloscope uses (as mentioned on
previous slide) an electron gun and the X and Y plates
to adjust where the stream of electrons go.
• The X-Plates move the beam horizontally (Left or Right)
• The Y-Plates move the beam vertically (Up or Down)
32. • The Y-plates are connected to a Y input
terminal. These are connected to an AC
supply.
Examples of things that use electron beams:
- Television
- X-ray tube
35. Alpha
Alpha particles are made of 2 protons and 2
neutrons.
This means that they have a charge of +2,
and a mass of 4.
Alpha particles are relatively slow and
heavy.
They have a low penetrating power - you
can stop them with just a sheet of paper.
Because they have a large charge, alpha
particles ionize other atoms strongly
36. Beta
•Beta particles have a charge of
minus 1, and a mass of about
1/2000th of a proton. .
•They are fast, and light.
•Beta particles have a medium
penetrating power - they are
stopped by a sheet of aluminum
•Beta particles ionize atoms that
they pass, but not as strongly as
alpha particles do.
37. Gamma
•Gamma rays are waves, not particles.
This means that they have no mass and no
charge.
•Gamma rays have a high penetrating power -
it takes a thick sheet of metal such as lead, or
concrete to reduce them significantly.
•Gamma rays do not directly ionize other
atoms
•We don't find pure gamma sources - gamma
rays are emitted alongside alpha or beta
particles. Strictly speaking, gamma emission
isn't 'radioactive decay' because it doesn't
change the state of the nucleus, it just carries
away some energy.
39. What is Background Radiation?
• Background radiation comes from naturally
decaying substances such as soil, rocks, air,
food and drink.
• It is detected by a Geiger Muller Tube
45. What can Radioactivity be used for?
1. Tracers
2. Radiotherapy
3. Testing for cracks
4. Thickness monitoring
5. Carbon Dating- after an organism dies the amount of
C-14 inside it begins to decay. It can be used to find
out how old a substance is.
6. Dating Rocks
46. This is the physics syllabus Complete
Best of luck for
your IGCSE exams
Especially my fellow candidates of May/June 2011!!!