Scribd
Upload
10 views3 pages

Practice Questions - Answers

The document contains practice questions about electrical circuits and concepts such as current, resistance, power, parallel and series circuits.

Uploaded by

7s5tddbphy
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
10 views3 pages

Practice Questions - Answers

The document contains practice questions about electrical circuits and concepts such as current, resistance, power, parallel and series circuits.

Uploaded by

7s5tddbphy
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 3

Practice Questions:

Q: A 9A current flows through a wire with a resistance of 0.5Ω . Find the power
generated by this current.

Q: A low resistance light bulb and a high resistance light bulb are connected in parallel
with each other. This parallel combination is in series with a 12V battery. Which bulb is
brighter - EXPLAIN.

Q: During the cold winter months, some gloves have the ability to provide extra warmth
due to an internal heating source. A simplified circuit, similar to those in electric gloves,
is comprised of a 9V battery with no internal resistance and three resistors as shown in
the image below.

How much power does the circuit provide?


Q: What is the resistance in a wire carrying a voltage of 10V and with a power of 4W?
Q: A circuit with two resistors (Resistor A and Resistor B) of equal resistance set up in
parallel is attached to a battery with negligible internal resistance. What will happen to
the voltage across resistor A if resistor B is removed?
(The wire of the circuit that resistor B is on will remain, however).

Q:

Given that the resistance of resisitor R = 2Ω, what is the voltage across the 4 Ω resistor in
the circuit shown below?

You might also like