Question

What is the current in a 75 W light bulb that
is plugged into 120 V household outlet?

Answer 1

P=VI
75=240*I
L=75 / 240
I rms =0.3125 A

Answer 2

Power = (voltage) x (current)

Divide each side by (voltage):

Current = (power) / (voltage)

I = (75) / 120 = 0.625 Amperes = 625 mA