7 In the arrangement shown in figure there are two coils wound on a non
1
conducting cylindrical rod. Initially the key is not inserted in the circuit. Later the key is inserted and then removed shortly after.
What are the two observations that can be noted from the galvanometer reading?
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When the key is inserted the galvanometer will show a deflection and then return to zero.
When the key is removed the galvanometer will show a deflection in the opposite direction and then return to zero.
This happens because current is induced as a result of variations in current.
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