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Q.A solenoid of length 0.5 m0.5\,\text{m} and 10001000 turns has a current of 5 A5\,\text{A}. The energy stored when field inside is 0.1 T0.1\,\text{T} is

a
0.039 J0.039\,\text{J}
b
0.078 J0.078\,\text{J}
c
0.157 J0.157\,\text{J}
d
0.314 J0.314\,\text{J}

Correct Answer: Option B

The correct solution involves applying the fundamental concept to derive the final value step by step...

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