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A square loop `ABCD` of edge a moves to the right with a velocity `v` parallel to `AB` . There is a uniform magnetic field of magnitude `B` , direction into the paper, in the region between `PQ` and `RS` only. I, II and III are three ppositions of the loop. (i) The emf induced in the loop has magnitude `B` a `v` in all three position (iii) Induced emf is anticlockwise in position II (iv) The induced emf is clockwise in position III A. `(i), (iii)`B. `(ii), (iii), (iv)`C. `(i), (ii)`D. `(iii), (iv)` |
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Answer» Correct Answer - B In position II, change in flux=0, emf=0 In position I and III, `e=Bav` In position I, flux is incrreasing, hence anticlockwise emf In position III, flux is decreasing, hence clockwise emf |
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