Physics-
General
Easy

Question

A rectangular loop is being pulled at a constant speed v, through a region of certain thickness d, in which a uniform magnetic field B is set up. The graph between position x of the right hand edge of the loop and the induced emfEwill be

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The correct answer is:


    As x increases so fraction numerator d B over denominator d t end fraction increases, i. e., induced emfleft parenthesis e right parenthesis is negative. When loop completely enters in the magnetic field, emf = 0
    When it exists, x increases but fraction numerator d B over denominator d t end fraction decreases, i. e. comma e is positive

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