Basic Concept of Electricity MCQs

Question 1

When an uncharged body is placed near a charged body, then uncharged body

Accepted Answer

gets charged by induction and then attracted towards the charging body.

Answer

is attracted first and then charged by induction.

Answer

gets charged by conduction.

Answer

remains a such

Question 2

The value of electric field intensity within the field due to a point charge can be determined by

Accepted Answer

Coulomb's law.

Answer

Gauss's law.

Answer

Ampere's law.

Answer

Maxwell's law.

Question 3

Space surrounding a charge, within which the influence of its charge extends is known as

Accepted Answer

electric field

Answer

magnetic field

Answer

lines of force

Answer

electric intensity.

Question 4

Electric field intensity between the plates of a parallel plate condenser is E. Now if a dielectric of medium of dielectric constant c is introduced between the plates, the electric field intensity will become

Accepted Answer

EEE

Answer

E E

Answer

E1

Answer

.rE7

Question 5

In the figure below, A, B and C are equal charges, when a unit charge moves from 'C' to '0' the force on the charge when it reaches at 0,

Accepted Answer

none of the above

Answer

will be zero

Answer

a pull in the direction of A.

Answer

a pull in the direction of B.

Question 6

For any medium, electric flux density D and electric intensity E are related as

Accepted Answer

E0 Er

Answer

D = E 0 E.

Answer

D=c0crE.

Question 7

Which of the following equation(s) is/are correct?

Accepted Answer

Answer

j = JE

Answer

VV. =

Answer

all of these

Question 8

The polatization of a dielectric material is given by

Accepted Answer

P=c0E(er-1)

Answer

P=ErE.

Answer

P = (Er-1)E

Answer

13?(cr--- i)??.

Question 9

For a perfect conductor

Accepted Answer

Dn = ps

Answer

Dn = 0

Answer

Dr = 00

Answer

none of these