Motion Toward the Loop 2. The bar magnet shown in the figure above is moved completely through the loop. Which of the following is a true statement about the direction of the current flow between the two points a and b in the circuit? nt (A) No current flows between a and b as the (B) Current flows from a to b as the magnet C) Current flows from b to a as the magnet (D) Current flows from a to b as the magnet (E) Current flows from b to a as the magnet The op. magnet passes through the loop. passes through the loop passes through the loop. enters the loop and from b to a as the magnet leaves the loop. enters the loop and from a to b as the magnet leaves the loop. Solution From Lenz\'s law the direction of current must be counter clockwise as seen from magnet side. there fore a current flows from a to b due to increase in magnetic flux when magnet enters the coil. a current flows from b to a due to decrease in magnetic flux when magnet leaves the coil. therefore option D is correct .

1. Motion Toward the Loop 2. The bar magnet shown in the figure above is moved completely
through the loop. Which of the following is a true statement about the direction of the current
flow between the two points a and b in the circuit? nt (A) No current flows between a and b as
the (B) Current flows from a to b as the magnet C) Current flows from b to a as the magnet (D)
Current flows from a to b as the magnet (E) Current flows from b to a as the magnet The op.
magnet passes through the loop. passes through the loop passes through the loop. enters the loop
and from b to a as the magnet leaves the loop. enters the loop and from a to b as the magnet
leaves the loop.
Solution
From Lenz's law the direction of current must be counter clockwise as seen from magnet side.
there fore a current flows from a to b due to increase in magnetic flux when magnet enters the
coil.
a current flows from b to a due to decrease in magnetic flux when magnet leaves the coil.
therefore option D is correct