Question
Question: The magnet in fig. rotates as shown on a pivot through its centre. At the instant shown, what are th...
The magnet in fig. rotates as shown on a pivot through its centre. At the instant shown, what are the directions of the induced currents
A
A to B and C to D
B
B to A and C to D
C
A to B and D to C
D
B to A and D to C
Answer
A to B and C to D
Explanation
Solution
N pole moves closer to coil CD and S pole moves closer to coil AB on rotation of magnet.
According to Lenz's law, N pole should develop at the end corresponding to C.
\ Induced current flows from C to D
Also S pole should develop at the end corresponding to B.
\ Induced current flows from A to B
Therefore the answer is (1).