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प्रश्न
The primary coil of a transformed has 800 urns and the secondary coil has 8 turns. It is connected to a 220 V a.c. supply. What will be the output voltage?
उत्तर
No. of turns in primary coil Np =800
No. of turns in secondary coil Np=8.
Input supply voltage Ep = 220 V.
`E_p/E_s = N_p / N_s`
`E_s = (N_sxx E_p)/N_p = (8 xx 220)/ 800`
`E_s = 2.2 V.`
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