A light bulb operating at 120 volts draws a current of 0.50 ampere for 240

seconds. The power rating of the light bulb is

W.

The power rating of the light bulb is 60 W

Explanation:

The power rating formula is given by,

P = I²*R

Rewrite the formula as

V=I*R

R=I/V

R = 120/0.50

R=240

P=I²*R

P=0.50²*240

P=60 W

The power rating of the light bulb is 60 W