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If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity | |
A. | less than that of disc but in opposite direction [Wrong Answer] |
B. | equal to that of disc and in the same direction [Wrong Answer] |
C. | equal to that of disc and in the opposite direction [Wrong Answer] |
D. | less than that of disc and in the same direction [Correct Answer] |