What are eddy currents?

Eddy currents : (Also called Foucault's Currents) Eddy currents are the loop of electrical currents induced within the conductors by magnetic field in the conductor, and it is perpendicular to magnetic field, as per Faraday's law of induction.

How does the self-inductance of a coil depend on the number of turns of the coil?

Self-inductance(L) of a coil depend on the number of turns(N) of the coil. Where self inductance is directly proportional to square of the number of turns. L ∝ N 2 . Here self inductance is represented by L, and Number of turn is represented by N.

E M B I B E

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 2

EASY

12th ICSE

IMPORTANT

Earn 100

Prove that the dimensions of emf are same as those of rate of change of magnetic flux.

Important Questions on Electromagnetic Induction

EASY

12th ICSE

IMPORTANT

NOOTAN ISC PHYSICS Class 12 Part-1>Chapter 11 - Electromagnetic Induction>QUESTIONS>Q 3

A copper loop and an aluminium loop are removed from a magnetic field in the same time-interval. In which loop will the induced emf and induced current be greater?