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 current drawn is 8 A.
The coefficient of coupling between the two coils is
A. 1/100
B. 1/9
C. 4/10
D. 8/10
Show Answer
Answer: B
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