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In a transformer, number of turns in the primary coil are 140 and that in the secondary coil are 280.

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In a transformer, number of turns in the primary coil are 140 and that in the secondary coil are 280. If current in primary coil is 4A, then that in the secondary coil is

(a) 4A 

(b) 2A 

(c) 6A 

(d) 10A.

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Correct Option(b) 2A 

Explanation:

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