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

CRO deflects the beam of

Question # 2

Ammeter is used to measure

Question # 3

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

Question # 4

Galvanometer is a device used for the detection of

Question # 5

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 6

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 7

Lorentz force is defined as

Question # 8

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

Question # 9

The force acting on a charge moving in a magnetic field

Question # 10

Electron gun consist of

Question # 11

A resistance used in voltmeter is called

Question # 12

Centripetal force for electron is given by

Question # 13

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 # 14

The unit of magnetic flux is

Question # 15

F = I(L x B) is a

Question # 16

Tesla is the unit of

Question # 17

The pointer of a magnetic compass:

Question # 18

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 19

Avo-meter is used of measure the

Question # 20

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

Question # 21

In a moving coil galvanometer, the deflecting couple depends upon

Question # 22

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 23

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 24

Magnetic induction is also called as:

Question # 25

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 26

The magnetic field outside the solenoid due to current is

Question # 27

The permeability of free space is measured in:

Question # 28

The SI unit of magnetic flux is

Question # 29

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 30

The galvanometer can be made sensitive if the value of the factor C/BAN is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
2 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
3 In the formula B= µ̻ nl, the symbol n denotes:
A.

Total number of turns of solenoid

B.

Number of turns per unit length

C.

Number of turns per unit volume

D.

Numbers of turns per unit area
4 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
5 Magnetic induction is also called as:
A.

Ampere’s law

B.

Faraday’s law

C.

Lenz’s law

D.

Newton’s law
6 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical
7

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
8 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
9 if the field is directed along the normal to the area, then flux is:
A.

Maximum

B.

Equal to zero

C.

Equal to BA

D.

Minimum
10 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point

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