Question

Calculate the heat generated in a coil of resistance of 30 volts is applied across it. The current 0.8 A is passed

for 4 minutes.

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Answer 1

Answer:

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Answer 2

Resistance(R)30 ohms
Current(I)=0.8A
Potential difference=I*R
=30*0.8
=24 V
Time taken=4 mins
=4*60=240 sec
Heat generated in a coil=V*I*T
=24*0.8*240
=4608 J