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.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Practise Electromagnetic Induction
288 free Electromagnetic Induction MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Lenz's Law questions
Two identical coaxial circular loops carry equal currents in the same direction. If the loops approach each other the current in______________?
A loop moves toward a stationary magnet. The induced current will:
The energy delivered by an induced current ultimately comes from
Lenz's law os based on the law of conservation of
The lenz's law is also a statement of the law of conservation of:
The Lenz's law refers to induced _.