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

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 # 2

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

Question # 3

The angle of deflection of coil can be measured by the

Question # 4

The sources of magnetic field are

Question # 5

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

Question # 6

A galvanometer is an instrument used to

Question # 7

Strength of magnetic field is measured in SI units, in:

Question # 8

The gavanometer constant of a moving coil galvanometer is given by

Question # 9

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

Question # 10

A resistance used in galvanometer to make it voltmeter is called

Question # 11

The vector representation of force experience give the direction of

Question # 12

The force acting on a charge moving in a magnetic field

Question # 13

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

Question # 14

The SI unit of flux density is.

Question # 15

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

Question # 16

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 17

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

Question # 18

A field is uniform and much stronger:

Question # 19

How many number of anodes used in electron gun

Question # 20

A voltmeter is used to measure the

Question # 21

F = I(L x B) is a

Question # 22

Resistance is measured in

Question # 23

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

Question # 24

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 # 25

The most suitable material for permanent magnet is

Question # 26

Galvanometer is a device used for the detection of

Question # 27

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

Question # 28

The magnetic field inside a solenoid can be increased by:

Question # 29

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

Question # 30

The pointer of a magnetic compass:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 In a moving coil galvanometer, the deflecting couple depends upon
A. area of the coil
B. number of turns of coil
C. value of magnetic field
D. all of the above
2 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
A. 5N
B. 4N
C. 1.5N
D. 6N
3

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
4 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
5 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current
6 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
7 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
8 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
9 To convert galvanometer into ammeter we connect
A. small resistance in parallel with galvanometer
B. small resistance in series with galvanometer
C. high resistance in series with galvanometer
D. high resistance in parallel with galvanometer
10 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these

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