The principle of an alternating current generator is based on
Correct answer: B. Faraday's law.
- A. Lenz's law.
- B. Faraday's law.
- C. Ampere's law.
- D. Coulomb's law.
Explanation
The principle of an alternating current generator is based on Faraday's law of electromagnetic induction. This law states that a change in magnetic flux through a coil induces an electromotive force (EMF) in the coil, which is the fundamental process in generating alternating current. Lenz's law is related to the direction of the induced current and is a consequence of Faraday's law, but it is not the primary principle. Ampere's law and Coulomb's law are not directly related to the operation of AC generators. Ampere's law pertains to the magnetic field generated by current, while Coulomb's law deals with electrostatic forces between charges.
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About Faraday's Law
Faraday's law states that an induced electromotive force equals the rate of change of magnetic flux linkage through a circuit. Questions cover changing field, area, angle or motion, the negative sign associated with Lenz's law, and the distinction between induced emf and the current that may flow in a closed circuit.
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