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

CRO deflects the beam of

Question # 2

Magnetic lines of force:

Question # 3

A galvanometer is an instrument used to

Question # 4

Weber is a unit of

Question # 5

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 6

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

Question # 7

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

Question # 8

The SI unit of magnetic induction is

Question # 9

The magnetic field outside the solenoid due to current is

Question # 10

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

Question # 11

The unit of magnetic flux is

Question # 12

The permeability of free space is measured in:

Question # 13

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 14

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

Question # 15

Current is measured in

Question # 16

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

Question # 17

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

Question # 18

How many number of anodes used in electron gun

Question # 19

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 20

Avo-meter is used of measure the

Question # 21

The unit of flux density is also given by

Question # 22

If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are

Question # 23

The CRO is used for displaying the waveform of a given

Question # 24

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

Question # 25

The SI unit of flux density is

Question # 26

A voltmeter is used to measure the

Question # 27

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 28

For the conversion of galvanometer into voltmeter, we connect a

Question # 29

A resistance used in galvanometer to make it voltmeter is called

Question # 30

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into
A. Voltmeter
B. Avometer
C. Ammeter
D. None of these
3

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
4 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
5 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
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 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
8 For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as
A. modification
B. voltage
C. current
D. resistance
9 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
10 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

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