Question

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 4 A, then that in the secondary coil is 

(a) 4 A 

(b) 2 A 

(c) 6 A 

(d) 10 A

Answer 1

Correct option: (b) 2 A

Explanation;