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

Galvanometer is a device used for the detection of

Question # 2

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 3

The permeability of free space is measured in:

Question # 4

Magnetic induction is also called as:

Question # 5

F = I(L x B) is a

Question # 6

Lorentz force is defined as

Question # 7

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 # 8

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 # 9

To convert galvanometer into ammeter we connect

Question # 10

A charged particle moving at right angle to the magnetic field will experience

Question # 11

How many number of anodes used in electron gun

Question # 12

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

Question # 13

The magnetic field outside the solenoid due to current is

Question # 14

A current carrying conductor sets up its own:

Question # 15

The field around a moving charge is called

Question # 16

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

Question # 17

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 18

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

Question # 19

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 # 20

The force acting on a charge moving in a magnetic field

Question # 21

The unit of flux density is also given by

Question # 22

The angle of deflection of coil can be measured by the

Question # 23

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

Question # 24

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

Question # 25

A solenoid is a coil of wire which is:

Question # 26

Weber is a unit of

Question # 27

Strength of magnetic field is measured in SI units, in:

Question # 28

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

Question # 29

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

Question # 30

magnetic field is a:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
2 Magnetic induction is also called as:
A.

Ampere’s law

B.

Faraday’s law

C.

Lenz’s law

D.

Newton’s law
3

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
4 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
5 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
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 e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
8 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)
9 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
10 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
A. 5N
B. 4N
C. 1.5N
D. 6N

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