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Physics-

General

Easy

Question

A conducting square loop of side L and resistance R moves in its plane with a 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 with part of the loop outside the field, as shown in figure. The induced emf is

$B v R$
$v B L / R$
$v B L$
$B L v / 2$

The correct answer is: $v B L$

As magnetic flux linked with the loop is changing, emf induced in the loop is $e equals B L v$ .

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