Question

A electric bulb is rate 220 V, 60 W. its electric cell resistance is nearly

Options

• 0.807 Ω

• 4 Ω

• 708 Ω

• 807 Ω

Answer 1

807 Ω

Explanation:

R = `V^2/p`

`(220)^2/60 = (220 xx 220)/60` = 807 Ω