Six loops are formed of copper wire of the same cross-sectional area. Loops `1,2,3` and `4` are identical, loop `5` has the same area as the others but is longer. At the instant shown, all the loops are moving at the same speed in the directions indicated. A uniform and constant magnetic field points out of the page in region `I`, in region `II` there is no magnetic field. Ignore any interaction between the loops.

Then the number of loop or loops in which current is nonzero and in clockwise direction

Options

A. no loop
B. one loop
C. two loops
D. Three loops

Answer

C

Explanation

Current in loop `2` and loop `3` is zero. Current in loop `1` is counterclockwise. Current in loops `4` and `5` is in clockwise sense.