A uniform metal rod is moving with a uniform velocity v parallel to a long straight wire carrying a current I . The rod is perpendicular to the wire with its ends at distances r 1 and r 2 (with r 2 r 1 ) from it. The E.M.F. induced in the

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A uniform metal rod is moving with a uniform velocity v parallel to a long straight wire carrying a current I . The rod is perpendicular to the wire with its ends at distances r 1 and r 2 (with r 2 > r 1 ) from it. The E.M.F. induced in the rod at that instant is

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Correct answer: B. &#x3BC; 0 Iv 2 &#x3C0; ln r 2 r 1

B = &#956; 0 i 2 &#960;x d&#949; = &#160; Bv dx &#949; = &#956; 0 iv 2 &#960; &#8747; r 2 r 1 dx x = &#956; 0 iv 2 &#960; ln r 2 r 1

A uniform metal rod is moving with a uniform velocity v parallel to a long straight wire carrying a current I . The rod is perpendicular to the wire with its ends at distances r 1 and r 2 (with r 2 > r 1 ) from it. The E.M.F. induced in the rod at that instant is

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