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Question
The primary coil of a transformer has 800 turns and the secondary coil has 8 turns. It is connected to a 220 V ac supply. What will be the output voltage?
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Solution
Given: Ep = 220 V, Es = ?, Np = 800 turns and Ns = 8 turns
In a transformer, `"E"_"s"/"E"_"p" = "N"_"s"/"N"_"p"`
`"E"_"s" = "N"_"s"/"N"_"p" × "E"_"P"`
= `8/800 × 200`
= `220/100`
= 2.2 volt
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