Question

a current of 20A flows through a wire when a battery which is able to do work of 20 j per coulomb is connected to it. calculate the resistance of the conductor

Answer 1

Answer:

1 Ω

Explanation:

We have given :

Current i = 20 A

Work done = 20 joule per coulomb

= > 20 = W / q  

We have to find resistance R :

We know :

Potential difference = Work done / Charge

= > V = W / q

From ohm's law we can write :

V = i R

= > i R = W / q

Putting values here we get :

= > 20 R = 20

= > R = 20 / 20

= > R = 1 Ω

Therefore , resistance of the conductor  is 1 Ω