Question

mirror and why?
7. In the arrangement shown in figure there are two
coils wound on a non – conducting cylindrical rod.
initially the key is not connected in the circuit later the key is inserted and then removed shortly after

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Answer 1

Answer:

We can see that the current in the first coil changes, the magnetic field associated with it also changes. Therefore, the magnetic field lines around the other coil also change. Because of it , a momentary deflection in galvanometer will be observed which will end out soon.