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

magnetic field is a:

Question # 2

The vector representation of force experience give the direction of

Question # 3

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

Question # 4

The unit of flux density is also given by

Question # 5

The pointer of a magnetic compass:

Question # 6

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

Question # 7

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

Question # 8

For the conversion of galvanometer into voltmeter, we connect a

Question # 9

CRO deflects the beam of

Question # 10

Lorentz force is defined as

Question # 11

A resistance used in voltmeter is called

Question # 12

Magnetic flux and flux density are related by

Question # 13

Which is modified form of galvanometer

Question # 14

Which one of the following relations is correct?

Question # 15

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 # 16

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 # 17

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

Question # 18

Ammeter is used to measure

Question # 19

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 # 20

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 21

The force acting on a charge moving in a magnetic field

Question # 22

The current is measured in

Question # 23

The field around a moving charge is called

Question # 24

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

Question # 25

How many number of anodes used in electron gun

Question # 26

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

Question # 27

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

Question # 28

Electron gun consist of

Question # 29

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

Question # 30

A shunt resistance parallel to the galvanometer is used to convert it into

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
2 The magnetic field inside a solenoid can be increased by:
A. Increasing n
B. Decreasing I
C. Increasing I
D. By using iron core within solenoid
3 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
4 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
5 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
6 Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
7

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
8 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
9 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
10 The force experienced by charged particle is maximum, if it moves
A. parallel to magnetic field
B. perpendicular to magnetic field
C. opposite to the magnetic field
D. none of these

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