Question

An electric appliance does work of 20 J when charge
of 2 C moves across the two points of the conduc-
tor. Calculate the resistance across the conductor if
a current of 0.75 A flows across it.​

Answer 1

Answer:

Explanation:

Given work done, W = 20J; Charge, q=2C; We know that electric potential, V = W/q = 20/2 = 10V;

Also given current, I = 0.75A; According to Ohm's law: V = iR => R = V/I = 10/0.75 = 40/3 ohm.