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

Electron gun consist of

Question # 2

The current is measured in

Question # 3

A resistance used in galvanometer to make it voltmeter is called

Question # 4

The field around a moving charge is called

Question # 5

The direction of lines of force depends upon the direction of

Question # 6

NmA-1 is commonly called:

Question # 7

The force experienced by charged particle is maximum, if it moves

Question # 8

Avo-meter is used of measure the

Question # 9

A resistance used in voltmeter is called

Question # 10

The torque per unit twist of coil is called

Question # 11

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 # 12

Which is modified form of galvanometer

Question # 13

For the conversion of galvanometer into voltmeter, we connect a

Question # 14

Magnetic lines of force:

Question # 15

Current is measured in

Question # 16

Weber is a unit of

Question # 17

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

Question # 18

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

Question # 19

The angle of deflection of coil can be measured by the

Question # 20

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

Question # 21

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

Question # 22

Method "lamp and scale arrangement" used to measure the

Question # 23

If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:

Question # 24

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

Question # 25

The SI unit of magnetic flux is.

Question # 26

Flurescent screen is a screen where visible spot

Question # 27

The SI unit of magnetic induction is

Question # 28

The magnetic field outside the solenoid due to current is

Question # 29

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

Question # 30

The unit of flux density is also given by

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
2 The force experienced by an electron projected in a magnetic field B with a velocity V is given by
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c
3 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
4 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
5 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
6 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
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:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
8 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:
A. -y direction
B. +y direction
C. +z direction
D. -z direction
9 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
10 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium

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