1000+ Electromagnetic Induction Objective Questions & Answers - 2

Question: 6

Which of the following inductor will have the least eddy current losses?

(A) powdered iron core

(B) iron core

(C) laminated iron core

(D) air core

Question: 7

A crack in the magnetic path of an inductor will result in

(A) reduced inductance

(B) zero inductance

(C) unchanged inductance

(D) increased inductance

Question: 8

Mutually inductance between two magnetically coupled coils depends on

(A) the number of their turns

(B) cross sectional are of their common core

(C) permeability of the core

(D) all of the above

Question: 9

In case of an inductance, current is proportional to

(A) magnetic field

(B) voltage across the inductance

(C) both a and b

(D) neither a nor b

Question: 10

The property of coil by which a counter e.m.f. is induced in it when the current through the coil changes is known as

(A) capacitance

(B) series aiding inductance

(C) mutual inductance

(D) self inductance