Question

1) A capacitor is charged to 8.0×10−4 C , then discharged by connecting a wire between the two plates. 20 μs after the discharge begins, the capacitor still holds 15% of its original charge.

What was the average current during the first 20 μsof the discharge?

2) What is the resistance of a 1.0-m-long copper wire that is 0.40 mm in diameter?

b)

What is the resistance of a 20-cm-long piece of iron with a 1.5 mm × 1.5 mm square cross section?

3) A motorcyclist is making an electric vest that, when connected to the motorcycle's 12 V battery, will warm her on cold rides. She is using 0.24-mm-diameter copper wire, and she wants a current of 3.8 A in the wire.What length wire must she use?

Answer 1

Hey Buddy, Due to some time restrictions I am not able to solve all the questions at once. So kindly post the remaining questions as a single question to get it solved.

hope you will understand.

Thanks and Good luck!
and, Thanks for using Chegg- Smarter way to study.