Question

Identify the law used to find the direction of eddy currents.

(a) Lenz’s law

(b) Maxwell’s law

(c) Ampere’s law

(d) Faraday’s law

This question was posed to me during an internship interview.

I need to ask this question from Electromagnetic Induction in section Electromagnetic Induction of Physics – Class 12

Answer 1

The correct choice is (a) Lenz’s law

To explain: Eddy currents are the currents induced in solid metallic masses when the magnetic flux threading through them changes. Eddy currents also oppose the change in magnetic flux, so their direction is given Lenz’s law.