Home Physics Electromagnetic Induction All Topic Question for Revision Test A coil of inductance and resistance is con…
Physics Electromagnetic Induction All Topic Question for Revision Test MCQ (Single Correct)

A coil of inductance and resistance is connected to a battery of emf . A resistance of is connected parallel to the coil. Now, at same instant the connection of the battery is switched OFF. Then, the amount of heat generated in the coil after switching OFF the battery is

A
1.25 mJ
B
2.5 mJ
C
0.65 mJ
D
0.12 mJ

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The correct answer is:
D

Energy,

Now, after switching OFF the battery, this energy is dissipated in coil (resistance ) and resistance in the ratio of their resistances or ). Therefore, heat generated in the coil.

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