Two loops of wire are arranged so that a changing current in the primary will induce a current in the secondary. The secondary loop has twice as many turns as the primary loop. As long as the current in the primary is steady at 3.0 A, the current in the secondary will be:

a. zero
b. 1.5 A
c. 3.0 A
d. 6.0 A

b. 1.5 A.

Explanation:

The principle of the transformer is used here.

Here current in primary coil be 3.0A.

The turn in secondary coil be twice then in primary coil.

So,

Turn ratio = ratio of turns from primary to secondary coil = 0.5

And the current is related as,

So,

So, Option B is answer.

Thanks

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c) both a and b.