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

Ammeter is used to measure

Question # 3

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 # 4

Which one of the following relations is correct?

Question # 5

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

Question # 6

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

Question # 7

The SI unit of magnetic induction is

Question # 8

Magnetic flux and flux density are related by

Question # 9

A resistance used in galvanometer to make it voltmeter is called

Question # 10

The SI unit of magnetic induction is tesla which is equal to

Question # 11

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

Question # 12

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

Question # 13

A solenoid is a coil of wire which is:

Question # 14

Centripetal force for electron is given by

Question # 15

The unit of magnetic flux is

Question # 16

Which is modified form of galvanometer

Question # 17

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 # 18

A current carrying conductor sets up its own:

Question # 19

Weber is a unit of

Question # 20

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

Question # 21

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

Question # 22

The direction of lines of force depends upon the direction of

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 27

magnetic field is a:

Question # 28

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

Question # 29

The SI unit of flux density is.

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
3 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
4

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
5 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
6

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
7 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
8 The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by
A. F=IB/L
B. F= L x B/I
C. F = IL x B
D. F = IL . B
9 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
10 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these

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