ElectroMagnetic InductionHard
Question
A conducting ring of radius r with a conducting spoke is in pure rolling on a horizontal surface in a region having a uniform magnetic field B as shown, v being the velocity of the centre of the ring. Then the potential difference V0 − VA is
Options
A.
B.
C.
D.
Solution
Considering pure rolling of OA about A: the induced emf across OA will be:
From Lenz law, O will be the negative end, while A will be the positive end.
Hence VO − VA = −
From Lenz law, O will be the negative end, while A will be the positive end.
Hence VO − VA = −
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