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

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

Question # 2

In the expression of force experienced by electron, the direction of both v and B are

Question # 3

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 4

Current is measured in

Question # 5

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 # 6

The unit of magnetic flux is

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

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

Question # 9

F = I(L x B) is a

Question # 10

The SI unit of magnetic flux is.

Question # 11

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

Question # 12

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 13

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 14

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 15

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

Question # 16

CRO deflects the beam of

Question # 17

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

Question # 18

The field around a moving charge is called

Question # 19

Weber is a unit of

Question # 20

The direction of lines of force depends upon the direction of

Question # 21

The magnetic field inside a solenoid can be increased by:

Question # 22

Ammeter is used to measure

Question # 23

The current is measured in

Question # 24

In the region surrounding a current carrying wire:

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

The voltage increases linearly with

Question # 29

The force acting on a charge moving in a magnetic field

Question # 30

NmA-1 is commonly called:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
2 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
3 In a straight current carrying conductor, the direction of magnetic field can be found by
A. right hand rule
B. left hand rule
C. head to tall rule
D. none of these
4 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
5 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
6 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
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 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
9 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
10 A field is uniform and much stronger:
A.

Inside a long solenoid

B.

Outside a long solenoid

C.

At the end of a long solenoid

D.

At the central point of long solenoid

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