The principle of an AC generator is.
Correct answer: B. Faraday's Law
- A. Lenz's law
- B. Faraday's Law
- C. Self-induction
- D. Ampere's law
Explanation
It works on the principle of Faraday's law of electromagnetic induction. Whenever a coil is rotated in a uniform magnetic field about an axis perpendicular to the field, the magnetic flux linked with the coil changes, and an induced emf is set up across its ends.
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About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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