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Q.

In a cylindrical region, uniform magnetic field which is perpendicular to the plane of the paper is increasing with time and a conducting rod PQ is placed in the region. Then,

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a

both P and Q will be equipotential

b

no emf will be developed

c

Q will be at higher potential than P

d

P will be at higher potential than Q

answer is B.

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Detailed Solution

Consider a cylindrical region of uniform magnetic field which is perpendicular to the plane.

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So, change in magnetic flux induced emf at high potential, i.e., positive across Q while low potential, i.e., negative across P in the conducting rod PQ.

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