ECAT Pre General Science Physics Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

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ECAT Pre General Science Physics Chapter 14 Electromagnetism

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Question # 1

The SI unit of flux density is

Question # 2

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

Question # 3

The current is measured in

Question # 4

A field is uniform and much stronger:

Question # 5

Method "lamp and scale arrangement" used to measure the

Question # 6

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

Question # 7

A long wire wound tightly on a cylindrical core is called:

Question # 8

magnetic field is a:

Question # 9

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 10

To convert galvanometer into ammeter we connect

Question # 11

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 12

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 13

The direction of lines of force depends upon the direction of

Question # 14

Magnetic lines of force:

Question # 15

The SI unit of magnetic induction is

Question # 16

It is customary represent a current flowing towards the reader by a symbol

Question # 17

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 18

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 19

if the field is directed along the normal to the area, then flux is:

Question # 20

In the formula B= µ̻ nl, the symbol n denotes:

Question # 21

The unit of flux density is also given by

Question # 22

The voltage increases linearly with

Question # 23

The magnetic field in the middle of a solenoid due to current is

Question # 24

Magnetic flux and flux density are related by

Question # 25

Galvanometer is a device used for the detection of

Question # 26

The CRO deflects the beam of electrons, when they passes through uniform

Question # 27

The SI unit of flux density is.

Question # 28

The strength of magnetic field around the current conductor is

Question # 29

The SI unit of magnetic induction is tesla which is equal to

Question # 30

Lorentz force is defined as

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is
A. Zero
B. 105 m
C. 10-10N
D. 108N
2 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
3 Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
4

the current is pass through the straight wire. The magnetic field established around it has its lines of force:
A.

Circular and endless

B.

Oval in shape and endless

C.

Straight

D.

Parabolic
5 Lorentz force is defined as
A. q(E + V x B)
B. q(E x B + V)
C. q(E x V + B)
D. q(E x B)
6 If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
7 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these
8 The force experienced by charged particle is maximum, if it moves
A. parallel to magnetic field
B. perpendicular to magnetic field
C. opposite to the magnetic field
D. none of these
9 Magnetic induction is also called as:
A.

Ampere’s law

B.

Faraday’s law

C.

Lenz’s law

D.

Newton’s law
10 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A

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