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

F = I(L x B) is a

Question # 2

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

Question # 3

The torque per unit twist of coil is called

Question # 4

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

Question # 5

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

Question # 6

In a moving coil galvanometer, the deflecting couple depends upon

Question # 7

The SI unit of magnetic flux is.

Question # 8

The force experienced by charged particle is maximum, if it moves

Question # 9

Flurescent screen is a screen where visible spot

Question # 10

Magnetic lines of force:

Question # 11

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 12

The gavanometer constant of a moving coil galvanometer is given by

Question # 13

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

Question # 14

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 15

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 16

The SI unit of magnetic permeability is

Question # 17

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

Question # 18

The SI unit of magnetic flux is

Question # 19

Centripetal force for electron is given by

Question # 20

The angle of deflection of coil can be measured by the

Question # 21

Magnetic induction is also called as:

Question # 22

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

Question # 23

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

Question # 24

CRO deflects the beam of

Question # 25

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

Question # 26

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

Question # 27

A resistance used in voltmeter is called

Question # 28

The unit of magnetic flux is

Question # 29

A current carrying conductor sets up its own:

Question # 30

Avo-meter is used of measure the

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical
2 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
3 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
4 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
A. n/AL
B. Al/n
C. nAL
D. nA/L
5 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2
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 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
8 In order to make a voltmeter, high resistance is connected with galvanometer, in
A. perpendicular
B. may be paralled or pendicular
C. series
D. none of these
9 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2
10 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A

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