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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. The current induced in the loop is

(1) BlvR clockwise

(2) BlvR anticlockwise

(3) 2BlvR anticlockwise

(4) Zero