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

In the region surrounding a current carrying wire:

Question # 2

The permeability of free space is measured in:

Question # 3

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

Question # 4

The current sensitivity of the galvanometer is

Question # 5

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 # 6

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

Question # 7

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

Question # 8

CRO deflects the beam of

Question # 9

The SI unit of flux density is

Question # 10

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

Question # 11

The most suitable material for permanent magnet is

Question # 12

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 13

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 # 14

The magnetic field inside a solenoid can be increased by:

Question # 15

A resistance used in galvanometer to make it voltmeter is called

Question # 16

To convert galvanometer into ammeter we connect

Question # 17

A current carrying conductor sets up its own:

Question # 18

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

Question # 19

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 20

Which is modified form of galvanometer

Question # 21

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

Question # 22

magnetic field is a:

Question # 23

Lorentz force is defined as

Question # 24

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

Question # 25

The gavanometer constant of a moving coil galvanometer is given by

Question # 26

The angle of deflection of coil can be measured by the

Question # 27

Centripetal force for electron is given by

Question # 28

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

Question # 29

The unit of magnetic flux is

Question # 30

A beam of electrons is provided by an

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
2 When the charged particle is projected at right angles to the field, then experienced by it will be:
A. Maximum
B. Zero
C. qvB
D. Both (A) and (B)
3 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these
4 The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter
5

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
6 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
7 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
8 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
9 The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by
A. F=eVB
B. F=e2V/B
C. F=e/VB
D. F=B2/ev
10 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform

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