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A Transformer Lowers E.M.F. from 220 V to 15 V. If the Number of Turns in Primary Are 3520, How Many Turns Are in the Secondary Coil? - Physics

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Question

A transformer lowers e.m.f. from 220 V to 15 V. If the number of turns in primary are 3520, how many turns are in the secondary coil?

Short/Brief Note
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Solution

We know that `"E"_"s"/"E"_"p" = "N"_"s"/"N"_"p"`

or `10/220 = "N"_"s"/3250`

`"N"_"s" = (3520 xx 15)/220 = 240`

Number of turns in secondary are = 240.

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