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

The unit of flux density is also given by

Question # 2

A resistance used in galvanometer to make it voltmeter is called

Question # 3

The magnetic field inside a solenoid can be increased by:

Question # 4

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

Question # 5

A field is uniform and much stronger:

Question # 6

In a moving coil galvanometer, the deflecting couple depends upon

Question # 7

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

Question # 8

The SI unit of flux density is

Question # 9

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

Question # 10

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 11

The current is measured in

Question # 12

The pointer of a magnetic compass:

Question # 13

The sources of magnetic field are

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

Weber is a unit of

Question # 18

A resistance used in voltmeter is called

Question # 19

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 # 20

Magnetic flux and flux density are related by

Question # 21

The gavanometer constant of a moving coil galvanometer is given by

Question # 22

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

Question # 23

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 # 24

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

Question # 25

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

Question # 26

The voltage increases linearly with

Question # 27

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

Question # 28

Which one of the following relations is correct?

Question # 29

The magnetic field outside the solenoid due to current is

Question # 30

The SI unit of magnetic flux is.

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as
A. IT = 10-4 G
B. IT = 105G
C. IT = 103G
D. IT = 104G
3 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2
4 When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into
A. Voltmeter
B. Avometer
C. Ammeter
D. None of these
5 Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:
A. Maximum
B. Minimum
C. Zero
D. Very small
6 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
7 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
8 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
9 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
10 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A

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