generator principle

Question

AC generator works on principle of?

RankGuru · Accepted Answer

1. **Function**: An AC generator (dynamo) converts mechanical energy into electrical energy.
2. **Physics**: It consists of a coil rotated in a strong uniform magnetic field.
3. **Flux Variation**: As the coil rotates, the angle $	heta$ between the area vector and the magnetic field changes continuously: $\Phi = BA \cos(\omega t)$.
4. **Mechanism**: According to Faraday's Law, the continuously changing flux induces a time-varying emf: $\epsilon = NAB\omega \sin(\omega t)$.
5. **Result**: This produces a sinusoidal alternating voltage/current.

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generator principle

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