The law used to find the direction of induced electromotive force (e.m.f.) with respect to the\ direction of an electric current in a conductor is
Correct answer: A. Lenz's law.
- A. Lenz's law.
- B. Faraday's law.
- C. Ampere's law.
- D. Coulomb's law.
Explanation
Lenz's law is the correct answer because it specifically addresses the direction of induced e.m.f. with respect to the direction of an electric current in a conductor. This law states that the induced e.m.f. is such that it opposes the change in magnetic flux that produced it. Faraday's law, Ampere's law, and Coulomb's law are not directly relevant to this relationship and therefore are incorrect choices.
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About Lenz's Law
Lenz's law states that the induced current flows in a direction that opposes the change in magnetic flux producing it. Questions connect this rule with Faraday's law, magnetic flux, induced emf and the direction of motion or current, while distinguishing opposition to flux change from opposition to the magnetic field itself.
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