Question

A light bulb has a power rating of 60 W. What is the current running into it if it is plugged into a 120 V outlet?

Answer 1

Answer:

The electric current running into the light bulb is 0.5 A.

Explanation:

We have,

Power rating on a light bulb is 60 W

It is required to find the current running into it if it is plugged into a 120 V outlet. Let I is the electric current. The mathematical definition of power is given by :

$P=VI$

I is electric current

$I=\dfrac{P}{V}\\\\I=\dfrac{60}{120}\\\\I=0.5\ A$

So, the electric current running into the light bulb is 0.5 A.