Question

What is the resistance of a torch bulb rated at 2.5v and 500ma?

Answer 1

V=IR

HENCE AS PER GIVEB DATA

V=2.5

I=500×10^-3

AND IS ASKED RESISTANCE

AS PER OHMS LAW V=IR

2.5=500×10^-3×R

R=2.5/500×10^-3

R=2.5 ×10^3/500

R=2500/500

R=5Ohm

HENCE THE ANSWER WILL BE 50 OHM

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