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

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 2

The torque per unit twist of coil is called

Question # 3

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 4

Method "lamp and scale arrangement" used to measure the

Question # 5

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

Question # 6

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

Question # 7

A solenoid is a coil of wire which is:

Question # 8

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

Question # 9

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 10

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 # 11

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 # 12

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

Question # 13

The gavanometer constant of a moving coil galvanometer is given by

Question # 14

Electron gun consist of

Question # 15

The unit of magnetic flux is

Question # 16

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

Question # 17

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 18

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 19

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 # 20

F = I(L x B) is a

Question # 21

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Question # 22

Magnetic lines of force:

Question # 23

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

Question # 24

The permeability of free space is measured in:

Question # 25

Ammeter is used to measure

Question # 26

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

Question # 27

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

Question # 28

Amperean path is a:

Question # 29

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 # 30

The pointer of a magnetic compass:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
A. 0
B. 1
C. 0.5
D. -1
2 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
3 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
4 In the expression of force experienced by electron, the direction of both v and B are
A. parallel
B. zero
C. perpendicular
D. none of them
5 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
6

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
7 The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by
A. F=eVB
B. F=e2V/B
C. F=e/VB
D. F=B2/ev
8 Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as
A. IT = 10-4 G
B. IT = 105G
C. IT = 103G
D. IT = 104G
9 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
10 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force

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