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 vector representation of force experience give the direction of

Question # 2

The direction of lines of force depends upon the direction of

Question # 3

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

Question # 4

The SI unit of magnetic induction is

Question # 5

A current carrying conductor sets up its own:

Question # 6

magnetic field is a:

Question # 7

Electron gun consist of

Question # 8

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

Question # 9

The angle of deflection of coil can be measured by the

Question # 10

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

Question # 11

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 # 12

if the field is directed along the normal to the area, then flux is:

Question # 13

Lorentz force is defined as

Question # 14

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

Question # 15

Amperean path is a:

Question # 16

A galvanometer is an instrument used to

Question # 17

Magnetic induction is also called as:

Question # 18

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

Question # 19

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 # 20

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

Question # 21

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 # 22

The field around a moving charge is called

Question # 23

The unit of magnetic flux is

Question # 24

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

Question # 25

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

Question # 26

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 27

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

Question # 28

The SI unit of magnetic flux is

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
2

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

Circular and endless

B.

Oval in shape and endless

C.

Straight

D.

Parabolic
3 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
4 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
5 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
6 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
7 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)
8 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
9 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
10 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these

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