A)
Polarity at Y
Direction of the current
N-pole
From the left
B)
Polarity at Y
Direction of the current
N-pole
From the right
C)
Polarity at Y
Direction of the current
S-pole
From the left
D)
Polarity at Y
Direction of the current
S-pole
From the right
Correct Answer: C
Solution :
As the N-pole of the magnet approaches the solenoid. the part of solenoid facing the change would try to oppose the change by inducing a current to produce a N-pole at X and hence a S-pole at Y to try to stop the magnet from coming in. Using right-hand grip rule, the direction of this induced current is going into the galvanometer from the left.
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