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Two identical coils of negligible resistance, when connected in series across a 50Hz fixed voltage source, draw a current of 10 A. When the terminals of one of the coils are reversed, the cun'ent drawn is 8 A. The coefficient of coupling between the two coils is | |
A. | 1/100 [Wrong Answer] |
B. | 1/9 [Correct Answer] |
C. | 4/10 [Wrong Answer] |
D. | 8/10 [Wrong Answer] |