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 long wire wound tightly on a cylindrical core is called:

Question # 2

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 3

A current carrying conductor sets up its own:

Question # 4

Magnetic lines of force:

Question # 5

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 # 6

Method "lamp and scale arrangement" used to measure the

Question # 7

The most suitable material for permanent magnet is

Question # 8

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 9

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

Question # 10

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 11

The field around a moving charge is called

Question # 12

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

Question # 13

Current is measured in

Question # 14

Tesla is the unit of

Question # 15

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

Question # 16

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

Question # 17

The magnetic field outside the solenoid due to current is

Question # 18

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 19

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

Question # 20

Which one of the following relations is correct?

Question # 21

CRO deflects the beam of

Question # 22

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

Question # 23

Magnetic flux and flux density are related by

Question # 24

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

Question # 25

In the region surrounding a current carrying wire:

Question # 26

The permeability of free space is measured in:

Question # 27

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 # 28

The SI unit of magnetic induction is

Question # 29

The CRO is used for displaying the waveform of a given

Question # 30

Flurescent screen is a screen where visible spot

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
2 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
3 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
4 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
5 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
6 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
7 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
A. F = B2
B. F = 0
C. F = B
D. F = B/2
8 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
9 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
10 The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by
A. F =q(v/B)
B. F=q2(v x B)
C. F=q(v x B)
D. F= vx B

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