1000+ Electromagnetic Induction Objective Questions & Answers - 1

Question: 1

Higher the self inductance of a coil,

(A) greater the flux produced by it

(B) longer the delay in establishing steady current through it

(C) lesser its weber-turns

(D) lower the e.m.f.induced

Question: 2

Which of the following circuit element stores element in the electromagnetic field?

(A) resistance

(B) variable resistor

(C) condenser

(D) inductance

Question: 3

The inductance of a coil will increase under all the following conditions except

(A) when permeability of the core increases

(B) when more area for each turn is provided

(C) when the number of turns of the coil increase

(D) when more length for the same number of turns is provided

Question: 4

The law that the induced e.m.f and current always oppose the cause producing them is due to

(A) coulomb

(B) newton

(C) lenz

(D) faraday

Question: 5

For a purely inductive circuit which of the following is true?

(A) any capacitance even if present in the circuit will not be charged

(B) actual power of the circuit is zero

(C) relative power is zero

(D) apparent power is zero