- AHigh potential at N side and low potential at P side.
- BHigh potential at P side and low potential at N side.
- CP and N both are at same potential.
- DUndetermined.
Explanation:

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(a) |
(b) |
(c) 4R |
(d) |
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(a) |
(b) |
(c) |
(d) |
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(c) Lines of force maximum but induced e.m.f. is not zero |
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(b) |
(c) |
(d) |