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

Question # 2

Which is modified form of galvanometer

Question # 3

The field around a moving charge is called

Question # 4

How many number of anodes used in electron gun

Question # 5

F = I(L x B) is a

Question # 6

The unit of magnetic flux is

Question # 7

A galvanometer is an instrument used to

Question # 8

The SI unit of magnetic permeability is

Question # 9

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

Question # 10

For the conversion of galvanometer into voltmeter, we connect a

Question # 11

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

Question # 12

The direction of lines of force depends upon the direction of

Question # 13

Amperean path is a:

Question # 14

The torque per unit twist of coil is called

Question # 15

Resistance is measured in

Question # 16

Electron gun consist of

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

The gavanometer constant of a moving coil galvanometer is given by

Question # 19

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

Question # 20

Magnetic flux and flux density are related by

Question # 21

CRO deflects the beam of

Question # 22

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

Question # 23

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

Question # 24

Weber is a unit of

Question # 25

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 # 26

NmA-1 is commonly called:

Question # 27

Which one of the following relations is correct?

Question # 28

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

Question # 29

Strength of magnetic field is measured in SI units, in:

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
2 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
3 if the field is directed along the normal to the area, then flux is:
A.

Maximum

B.

Equal to zero

C.

Equal to BA

D.

Minimum
4 If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is
A. F = B2
B. F = 0
C. F = B
D. F = B/2
5 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
6 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
7 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
8 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
9 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
10 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these

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