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

Question

In a transformer, the number of turns in the primary coil is 140 and that in the secondary coil is 280 . If the current in the primary coil is 4 A , then that in the secondary coil is, 4 A, 2 A, 6 A, 10 A

MARKS App · Accepted Answer

I 2 N 2 = I 1 N 1 ∴ I 2 = I 1 N 1 N 2 = 4 × 140 280 = 2 A.

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