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

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

Question # 2

A voltmeter is used to measure the

Question # 3

Ammeter is used to measure

Question # 4

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 # 5

The pointer of a magnetic compass:

Question # 6

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

Question # 7

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

Question # 8

Lorentz force is defined as

Question # 9

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

Question # 10

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 # 11

The CRO is used for displaying the waveform of a given

Question # 12

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

Question # 13

Galvanometer is a device used for the detection of

Question # 14

F = I(L x B) is a

Question # 15

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 16

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

Question # 17

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

Question # 18

CRO deflects the beam of

Question # 19

Weber is a unit of

Question # 20

A current carrying conductor sets up its own:

Question # 21

When current passes through a solenoid coil, it behaves like a

Question # 22

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

Question # 23

Tesla is the unit of

Question # 24

In a moving coil galvanometer, the deflecting couple depends upon

Question # 25

The most suitable material for permanent magnet is

Question # 26

The current sensitivity of the galvanometer is

Question # 27

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

Question # 28

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 # 29

In the region surrounding a current carrying wire:

Question # 30

The sources of magnetic field are

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
3 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
4 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
5 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
6 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
7 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
8 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
9 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
10 A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is
A. Zero
B. 105 m
C. 10-10N
D. 108N

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