Physics, asked by Imadkhan1653, 1 year ago

A lamp rated hundred watt at 2:20 volt is connected to the main electric supply what amount of current is drawn from the supply if the voltages to 20 volt what is its resistance

Answers

Answered by CBSEMP
1
P=100W 
V=220v
i.​P=VI
I=P/V
I=100/220
I=0.4A
ii.​P=V^2/R 
R=V^2/P
R=220*220/100
R=484ohm 


mark as brainlist I hope it help u !!!!! follow me guys
Similar questions