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  • The current through 12 watt tungsten filament lamp connected to 12 V battery is 3 A. calculate energy consumed in joules in one hour.

The current through 12 watt tungsten filament lamp connected to 12 V battery is 3 A. calculate energy consumed in joules in one hour.

Answers (1)

Given, I=3A  and V= 12V

By ohm's law, V=IR

12V=3*R

R=4Ω

t=1 hr=60 sec

Energy consumed = V²t/R

=144*60/4

=2160 J

Posted by

shubham.krishnan

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