The figure below shows three situations of conducting loops in magnetic fields.
ID: 1351738 • Letter: T
Question
The figure below shows three situations of conducting loops in magnetic fields. The loop is in the plane of the paper and the direction of the magnetic field is given by the direction of the arrows. The arrangements change from the initial-state (i) to the final-state (f) for each diagram. Select True or False for all statements.
True False In diagram A, while changing from (i) to (f), a counterclockwise current is induced in the loop.
True False In diagram B, while changing from (i) to (f), a clockwise current is induced in the loop.
True False In diagram C, while changing from (i) to (f), a clockwise current is induced in the loop.
Explanation / Answer
In diagram A) false (beacuse here clockwise current is induced)
In dagram B) True (here magnetic flux through the loop changes(out of the page), so current is induced and this induced current opposes the increase in flux through the loop)
In diagram C) Flase (no current is induced as there is no change in magnetic flux through the loop)