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A coil =of inductance L=50muH and resist...

A coil =of inductance `L=50muH` and resistance =`0.5Omega` is connected to a battery of emf=5A. A resistance of `10Omega` is connected parallel to the coil. Now at some instant the connection of the battery is switched off. Then the amount of heat generated in the coil after switching off the battery is (0.02)x in mJ. Find valuie of x.

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