Q.

A coil of resistance 10 ohm and inductance 5 henry is connected to a 100 volt battery. Then, the energy stored in the coil in the form of magnetic field (In steady state) _____joules

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answer is 250.

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Detailed Solution

I=VR=10010=10A Now, U=12LI2=12×5×(10)2=250J

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