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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 increasing, hence anti-clockwise emf. If position III, flux is decreasing, hence clockwise emf. |
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