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

It is customary represent a current flowing towards the reader by a symbol

Question # 2

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 # 3

The angle of deflection of coil can be measured by the

Question # 4

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

Question # 5

magnetic field is a:

Question # 6

Lorentz force is defined as

Question # 7

Magnetic induction is also called as:

Question # 8

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

Question # 9

Electron gun consist of

Question # 10

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

Question # 11

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

Question # 12

CRO deflects the beam of

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

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

Question # 15

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 # 16

The direction of lines of force depends upon the direction of

Question # 17

Magnetic flux and flux density are related by

Question # 18

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

Question # 19

A field is uniform and much stronger:

Question # 20

A current carrying conductor sets up its own:

Question # 21

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

Question # 22

Tesla is the unit of

Question # 23

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

Question # 24

In the region surrounding a current carrying wire:

Question # 25

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 # 26

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

Question # 27

How many number of anodes used in electron gun

Question # 28

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 29

The SI unit of magnetic flux is

Question # 30

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above
2 The strength of magnetic field around the current conductor is
A. Smaller near the conductor
B. Greater near the conductor
C. Greater at the large distance from the conductor
D. Constant near and away from the conductor
3 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
4 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
5 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
6 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
7 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
8 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
9 In the formula B= µ̻ nl, the symbol n denotes:
A.

Total number of turns of solenoid

B.

Number of turns per unit length

C.

Number of turns per unit volume

D.

Numbers of turns per unit area
10 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these

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