11. Two separate but similar coils of wire are mounted close to each other, as s

Question

11. Two separate but similar coils of wire are mounted close to each other, as shown. The first coil is connected to a battery. The second coil is connected to an galvanometer (a device that detects the presence of current-the needle can move either to the left or to the right.) (a) How does the galvanometer respond when the switch in the first circuit is closed? (b) After being closed, how does the meter respond when the current is steady? (c) How does the meter respond when the switch is opened? Primary Secondary 1

Explanation / Answer

a. Galvenometer will deflect rightward as current flow from right to left in coil in order to oppose the change in flux in it.

b. Glvenometer doesn't show any deflection when current is in steady state in primary coil because there isn't any change in flux.

c. Galvenometer will deflect leftward as current goes from left to right in order to increase the flux through secondary coil

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