Q.

In a step up transformer, if ratio of turns of primary to secondary is 1 : 10 and primary voltage is 230 V. If the load current is 2A, then the current in primary is

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a

20 A

b

10 A

c

2 A

d

1 A

answer is A.

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Detailed Solution

NPNS=ISIP⇒IP=NSNPIS=101×2=20A
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