A light bulb has resistance of 240 W when operating at 120 V.Find the current in the light bulb.
A)2.0 A
B)1.0 A
C)0.50 A
D)0.20 A

Name: A light bulb has resistance of 240 W when operating at 120 V.Find the current in the light bulb. A)2.0 A B)1.0 A C)0.50 A D)0.20 A
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Question

Quizplus · Accepted Answer

We can use Ohm's Law, V = IR, to find the current.

V = 120 V
R = 240 W

I = V/R
I = 120/240
I = 0.5 A

Therefore, the current in the light bulb is 0.50 A, which corresponds to choice C.

A Light Bulb Has Resistance of 240 W When Operating