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 current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

Question # 2

A resistance used in galvanometer to make it voltmeter is called

Question # 3

The voltage increases linearly with

Question # 4

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 5

The most suitable material for permanent magnet is

Question # 6

The unit of flux density is also given by

Question # 7

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 8

Weber is a unit of

Question # 9

The direction of lines of force depends upon the direction of

Question # 10

A voltmeter is used to measure the

Question # 11

Resistance is measured in

Question # 12

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

Question # 13

The SI unit of flux density is

Question # 14

Avo-meter is used of measure the

Question # 15

The gavanometer constant of a moving coil galvanometer is given by

Question # 16

The CRO is used for displaying the waveform of a given

Question # 17

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is

Question # 18

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Question # 19

Method "lamp and scale arrangement" used to measure the

Question # 20

Magnetic flux and flux density are related by

Question # 21

If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are

Question # 22

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 23

CRO deflects the beam of

Question # 24

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

Question # 25

The force experienced by charged particle is maximum, if it moves

Question # 26

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

Question # 27

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 28

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

Question # 29

magnetic field is a:

Question # 30

The unit of magnetic flux is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2
2 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
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 voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
5 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
6 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
7 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
8 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
9 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
10 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above

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