Question

A current of 2amp flowing through a conductor produced 80 joule of heat in 10 sec. The resistance of the conductor is:-

Options

• 0.5 Ω

• 2 Ω

• 4 Ω

• 20 Ω

Answer 1

2 Ω

Explanation:

H = I²R⁺ or R = `H/I^(2+)`

`80/(22 xx 10)` = 2 Ω