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

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 3

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

Question # 4

A resistance used in voltmeter is called

Question # 5

The SI unit of flux density is

Question # 6

The most suitable material for permanent magnet is

Question # 7

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

Question # 8

If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:

Question # 9

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 10

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 11

In the expression of force experienced by electron, the direction of both v and B are

Question # 12

The SI unit of magnetic permeability is

Question # 13

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 14

The angle of deflection of coil can be measured by the

Question # 15

The SI unit of magnetic flux is.

Question # 16

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

Question # 17

The vector representation of force experience give the direction of

Question # 18

The magnetic field in the middle of a solenoid due to current is

Question # 19

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

Question # 20

The strength of magnetic field around the current conductor is

Question # 21

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 # 22

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

Question # 23

A resistance used in galvanometer to make it voltmeter is called

Question # 24

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

Question # 25

Method "lamp and scale arrangement" used to measure the

Question # 26

A current carrying conductor sets up its own:

Question # 27

The SI unit of magnetic induction is

Question # 28

The permeability of free space 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 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
2 Total number of turns on 0.15 m length solenoid is 300. the value of n is:
A. Greater than 300
B. Smaller than 300
C. Equal to 300
D. Any of (A) or (B)
3 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these
4 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
5 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
6 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
7 Magnetic induction is also called as:
A.

Ampere’s law

B.

Faraday’s law

C.

Lenz’s law

D.

Newton’s law
8 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
9 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
10 'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
A. 0
B. 1
C. 0.5
D. -1

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