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Physics-

General

Easy

Question

The number of turns of the primary and the secondary coils of a transformer are 10 and 100 respectively. The primary voltage and the current are given as $2 blank V$ and $1 blank A$ . Assuming the efficiency of the transformer as 90%, the secondary voltage and the current respectively are

$20 V$ and $0.1 A$
$0.2 V$ and $1 A$
$20 V$ and $0.09 A$
$0.2 V$ and $0.9 A$

The correct answer is: $20 V$ and $0.09 blank A$

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