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03-03-2015
Physics

contestada

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

Respuesta :

Alexandra12230 Alexandra12230

03-03-2015

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

Answer Link

03-03-2015

Power = (voltage) x (current)

Divide each side by (voltage):

   Current = (power) / (voltage)

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

Answer Link

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