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 SI unit of magnetic flux is.

Question # 2

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

Question # 3

Electron gun consist of

Question # 4

CRO deflects the beam of

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

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

Question # 7

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

Question # 8

The field around a moving charge is called

Question # 9

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

Question # 10

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 # 11

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

Question # 12

Tesla is the unit of

Question # 13

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

Question # 14

NmA-1 is commonly called:

Question # 15

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

Question # 16

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 17

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 18

Weber is a unit of

Question # 19

The SI unit of magnetic flux is

Question # 20

In the formula B= µ̻ nl, the symbol n denotes:

Question # 21

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

Question # 22

The gavanometer constant of a moving coil galvanometer is given by

Question # 23

The unit of flux density is also given by

Question # 24

Magnetic lines of force:

Question # 25

Amperean path is a:

Question # 26

The sources of magnetic field are

Question # 27

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

Question # 28

The current is measured in

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
2 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
3 In a moving coil galvanometer, the deflecting couple depends upon
A. area of the coil
B. number of turns of coil
C. value of magnetic field
D. all of the above
4 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
5 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
6 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
7 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
8 In the expression of force experienced by electron, the direction of both v and B are
A. parallel
B. zero
C. perpendicular
D. none of them
9 The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by
A. F=eVB
B. F=e2V/B
C. F=e/VB
D. F=B2/ev
10 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these

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