Question

Calculate the resistance of a 10 W light bulb plugged into an outlet providing a voltage of 120 V. Also find the current in the circuit

Answer 1

Explanation:

Given : Power of bulb P=10 W

Voltage applied across it V=120 V

Using P=

R

V

2

∴ 10=

R

(120)

2

⟹R=240Ω