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 torque per unit twist of coil is called

Question # 2

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

Question # 3

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

Question # 4

Amperean path is a:

Question # 5

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

Question # 6

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 7

In a moving coil galvanometer, the deflecting couple depends upon

Question # 8

The SI unit of flux density is.

Question # 9

The unit of magnetic flux is

Question # 10

Which is modified form of galvanometer

Question # 11

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

Question # 12

A galvanometer is an instrument used to

Question # 13

The voltage increases linearly with

Question # 14

For the conversion of galvanometer into voltmeter, we connect a

Question # 15

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

Question # 16

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

Question # 17

A voltmeter is used to measure the

Question # 18

The angle of deflection of coil can be measured by the

Question # 19

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 20

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

Question # 21

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

Question # 22

The SI unit of magnetic permeability is

Question # 23

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 24

The magnetic field inside a solenoid can be increased by:

Question # 25

The force acting on a charge moving in a magnetic field

Question # 26

The field around a moving charge is called

Question # 27

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 28

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 # 29

Resistance is measured in

Question # 30

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
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 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
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 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
A. n/AL
B. Al/n
C. nAL
D. nA/L
6 The force experienced by charged particle is maximum, if it moves
A. parallel to magnetic field
B. perpendicular to magnetic field
C. opposite to the magnetic field
D. none of these
7 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
8 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
9 The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the
A. magnetic flux
B. magnetic induction
C. magnetic field
D. self inductance
10 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current

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