Generator Principle
Easyphysics
AC generator works on principle of?
Select the correct option:
Solution
Incorrect! Answer:
Electromagnetic induction
- Function: An AC generator (dynamo) converts mechanical energy into electrical energy.
- Physics: It consists of a coil rotated in a strong uniform magnetic field.
- Flux Variation: As the coil rotates, the angle θ between the area vector and the magnetic field changes continuously: Φ=BAcos(ωt).
- Mechanism: According to Faraday's Law, the continuously changing flux induces a time-varying emf: ϵ=NABωsin(ωt).
- Result: This produces a sinusoidal alternating voltage/current.
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About This Question
- Subject
- physics
- Chapter
- em induction and ac
- Topic
- generator principle
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Electromagnetic induction
- Function: An AC generator (dynamo) converts mechanical energy into electrical energy.
- Physics: It consists of a coil rotated in a strong uniform magnetic field.
- Flux Variation: As the coil rotates, the angle θ between the area vector and the magnetic field changes continuously: Φ=BAcos(ωt).
- Mechanism: According to Faraday's Law, the continuously changing flux induces a time-varying emf: ϵ=NABωsin(ωt).
- Result: This produces a sinusoidal alternating voltage/current.
This easy difficulty physics question is from the chapter em induction and ac, covering the topic of generator principle. It appeared in the 2025 exam.
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