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The primary and secondary coil of a transformer have 50 and 1500 turns respectively. If the magnetic flux φ linked with the primary coil is given by φ = φ0 + 4t, where φ is in webers, t is time in seconds and φ0 is a constant, the output voltage across the secondary coil is
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- 120 volts
- 220 volts
- 30 volts
- 90 volts
Correct Option: A
| Since | Vs | = | Ns |
| VP | Np |
Where Ns = No. of turns across primary coil = 50
Np = No. of turns across secondary coil = 1500
| and Vp = | dφ | = | d | (φ0 + 4t) = 4 |
| dt | dt |
| ⇒ Vs = | × 4 = 120 V | |
| 50 |
