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 voltage increases linearly with

Question # 2

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 3

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

Question # 4

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 5

A voltmeter is used to measure the

Question # 6

The unit of magnetic flux is

Question # 7

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

Question # 8

The SI unit of flux density is.

Question # 9

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

Question # 10

NmA-1 is commonly called:

Question # 11

Electron gun consist of

Question # 12

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

Question # 13

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 # 14

Which one of the following relations is correct?

Question # 15

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

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

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

Question # 18

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

Question # 19

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

Question # 20

Flurescent screen is a screen where visible spot

Question # 21

How many number of anodes used in electron gun

Question # 22

The torque per unit twist of coil is called

Question # 23

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

Question # 24

Amperean path is a:

Question # 25

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

Question # 26

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 # 27

To convert galvanometer into ammeter we connect

Question # 28

The force acting on a charge moving in a magnetic field

Question # 29

In the region surrounding a current carrying wire:

Question # 30

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
2 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
3 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above
4 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
5 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
6 A field is uniform and much stronger:
A.

Inside a long solenoid

B.

Outside a long solenoid

C.

At the end of a long solenoid

D.

At the central point of long solenoid
7 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
8 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)
9 Lorentz force is defined as
A. q(E + V x B)
B. q(E x B + V)
C. q(E x V + B)
D. q(E x B)
10 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter

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