Question

A conducting square loop of side 'L' and resistance 'R' moves in its plane with the uniform velocity 'v' perpendicular to one of its sides. A magnetic induction 'B' constant in time and space pointing perpendicular and into the plane of the loop exists everywhere as shown in the figure. The current induced in the loop is ______.

पर्याय

• BLv/R Clockwise

• BLv/R Anticlockwise

• 2BLv/R Anticlockwise

• Zero

Answer 1

A conducting square loop of side 'L' and resistance 'R' moves in its plane with the uniform velocity 'v' perpendicular to one of its sides. A magnetic induction 'B' constant in time and space pointing perpendicular and into the plane of the loop exists everywhere as shown in the figure. The current induced in the loop is zero.

Explanation:

Current induced is I = `"lel"/"R"`

Now lel = `("d"phi)/"dt"`

But there is no change of flux with time, as `vec "B", vec "A" and theta` all remain constant with time.

∴ No current is induced.