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Physics-

General

Easy

Question

The number of turns in the primary coil of a transformer is 200 and the number of turns in the secondary coil is 10. If $240 blank v o l t blank A C$ is applied to the primary, the output from the secondary will be

$48 V$
$24 V$
$12 V$
$6 V$

The correct answer is: $12 blank V$

$fraction numerator V subscript s end subscript over denominator V subscript p end subscript end fraction equals fraction numerator N subscript s end subscript over denominator N subscript p end subscript end fraction rightwards double arrow V subscript s end subscript equals fraction numerator N subscript s end subscript over denominator N subscript p end subscript end fraction cross times V subscript p end subscript equals fraction numerator 10 over denominator 200 end fraction cross times 240 equals 12 blank v o l t s$

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