Resistance is a measure of how much a component resists or reduces the flow of electric current. Components with higher resistance allow less current to flow than those with lower resistance. Resistance is calculated by dividing the voltage by the current using the formula: Resistance (R) = Voltage (V) / Current (I). This relationship can be used to determine the resistance of resistors in circuits based on the voltage provided and current flowing.
Alessandro Volta invented electric battery. It was first named as Voltaic Pile. For his contributions to science, the unit of electric potential is named as Volt. John Frederic Daniell developed Daniell cell. Copy the link given below and paste it in new browser window to get more information on Cells in Series and in Parallel www.askiitians.com/iit-jee-electric-current/cells-in-series-and-in-parallel/
This paper discusses the barriers of desktop virtualization adoption in the enterprise, the need for convergence in desktop virtualization approaches and the unique requirements across different types of enterprise users. Finally, this paper reviews the RingCube vDesk solution, including how it works and how it’s Workspace Virtualization Engine (WVE) overcomes the barriers posed by legacy virtualization technologies.
Alessandro Volta invented electric battery. It was first named as Voltaic Pile. For his contributions to science, the unit of electric potential is named as Volt. John Frederic Daniell developed Daniell cell. Copy the link given below and paste it in new browser window to get more information on Cells in Series and in Parallel www.askiitians.com/iit-jee-electric-current/cells-in-series-and-in-parallel/
This paper discusses the barriers of desktop virtualization adoption in the enterprise, the need for convergence in desktop virtualization approaches and the unique requirements across different types of enterprise users. Finally, this paper reviews the RingCube vDesk solution, including how it works and how it’s Workspace Virtualization Engine (WVE) overcomes the barriers posed by legacy virtualization technologies.
Everything you need to have in your online armoury - social, apps, web and mo...Elizabeth Clark
This presentation is by Elizabeth Clark, Director of Dream Agility and Jewellers Ark performed to a packed workshop at IJL 2013 at Earls Court, London. Clark discusses how Google is driving prices ever lower in the jewellery industry and how independent jewellers must adapt. Furthermore Clark argues that consumers are more price knowledgeable than ever before due to Google PLA ads and more discriminating based on the wide availability of online review services, which once again are being promoted in Google Places, Google PPC listings, and using rich snippets. This has led to 45% of footfall engaging in 'show-rooming'. Finally, she highlights some excellent use of the Facebook API by Nigel O'Hara, an Irish Jeweller who now has over 16000 likes and shows how he achieved this.
Tips for Improving Google Shopping Campaign results Elizabeth Clark
Presenter slides from the first Shopping Guru's group meeting at Deloitte in Manchester. Attended by retailers , digital agencies and ad tech companies. Presentations covered the Google Myths to be wary of, rapid growth retailer case study, the agency role in managing feeds, and Manchester's opportunity to play a key role in setting shopping best practice.
Electricity and Electromagnetism (experimental study)Raboon Redar
You’ll understand the way to calculate and measure resistance in parallel and series circuits by knowing two of the three values of voltage, current, or resistance. In this experiment, there are 3 resistors, 1 power supply and wires you need for connecting resistors to each other, then to power supply. You can measure each resistor by an ohmmeter, voltages by voltmeter and currents by amperemeter (ammeter), while all of them can be measured by a multimeter. Use a multimeter for measuring resistance for better accuracy.
Electrical elements are conceptual abstractions representing idealized electrical components, such as resistors, capacitors, and inductors, used in the analysis of electrical networks. All electrical networks can be analyzed as multiple electrical elements interconnected by wires.
Name __________________________________ VannaJoy20
Name: __________________________________ Date: ____________________
SERIES AND PARALLEL CIRCUITS
Introduction
In today’s lab, you are going to investigate the characteristics of circuits with resistors in series and circuits with resistors in parallel. To investigate the characteristics, you are going to apply Ohm’s Law.
Voltage (V) = Current (I) x Resistance (R)
Purposes
1. To determine the equivalent resistance of resistors in series.
2. To determine the equivalent resistance of resistors in parallel.
3. To apply Ohm’s Law to simple circuits.
Materials
This lab requires you to create simulated circuits using the
PhET Circuit Construction Kit Virtual Lab (
be sure you use the HTML5 version, not the Java version).
Part 1: Applying Ohm’s Law to a Simple Circuit
Create the following simple circuit using the simulation.
The simulation shows electrons flowing from the negative terminal of the battery (black end), through the resistor (light bulb) and the positive terminal (copper colored end).
Change the current direction by selecting
Conventional Current (in top right box). This shows the direction physicists thought current was flowing before the existence of the electron was discovered.
Set the voltage and resistance in your circuit using the values in the table below that correspond to the first letter of your last name:
First letter of Last Name
Voltage
Resistance
G-I
7 V
7 Ω
Change the setting on the battery and light bulb by clicking on the component and using the arrows and/or slider at the bottom of the simulation screen. Enter the values you are using in the table below:
Voltage
Resistance
Current
V
Ω
A
Using your assigned values of voltage (V) and resistance (R), use Ohm’s Law to calculate the current to demonstrate that the ammeter reading is correct.
Result of this calculation =
A
Now double the voltage. Indicate the new values in the circuit in the following table:
Voltage
Resistance
Current
V
Ω
A
So when the voltage is doubled, the current is
(put an X next to your choice)
a
½ of what it was.
b
¼ of what it was.
c
4 times what it was.
d
2 times what it was.
Do not change the voltage of the battery from new value (listed above). Double the resistance. Indicate in the following table the values of the circuit after making the change.
Voltage
Resistance
Current
V
Ω
A
So when the resistance is doubled, the current is
(put an X next to your choice)
a
½ of what it was.
b
¼ of what it was.
c
4 times what it was.
d
2 times what it was.
For part 2 and 3, keep the voltage the same as the value you were assigned in part 1. Use the following values of resistances in your circuit using the values in the table below that correspond to the first letter of your last name
First letter of Last Name
Volt ...
1. 28 April 2010 Resistance in Circuits Different components draw different amounts of current from the power supply . This is because each component resists the flow of charge differently. A component that allows a big current through has a small resistance. A component that allows a small current through has a big resistance. Resistance is measured in Ohms,
2. A resistor is a component that resists (slows/reduces) current. There are many sizes of resistor with different resistance values. In a circuit diagram a resistor is shown by: or 4 is the resistance of these resistors. Consider these two circuits: The resistor in circuit is ______ because the current is _________ 2 bigger / smaller bigger / smaller 4 4 2A 4 12V 2A 6 1 12V 4A 2
3. Calculating Resistance: Voltage,V = 12V Current, I = 2A Resistance,R = 6 Is there a relationship between these numbers? 12V 4A 1 2 1 12 2 6 V I R 2A 4 12V 2A 6
