Question

An electric lamp rated at 48w,12-v supply. Calculate the current flowing in the lamp and the resistance

Answer 1

power=current*voltage
current=power/volts=4amps

Resistance=voltage/current

Answer 2

Since P=48w
And V=12v
And I=?
So therefore
N/B P=IV
48=I*12
Divide both side by 12
48/12 = I 12/12
I = 4ampere