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

Ammeter is used to measure

Question # 2

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

Question # 3

The torque per unit twist of coil is called

Question # 4

A resistance used in galvanometer to make it voltmeter is called

Question # 5

A voltmeter is used to measure the

Question # 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:

Question # 7

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

Question # 8

The unit of magnetic flux is

Question # 9

Avo-meter is used of measure the

Question # 10

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

Question # 11

The magnetic field inside a solenoid can be increased by:

Question # 12

In the formula B= µ̻ nl, the symbol n denotes:

Question # 13

A long wire wound tightly on a cylindrical core is called:

Question # 14

Magnetic flux and flux density are related by

Question # 15

The CRO is used for displaying the waveform of a given

Question # 16

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 17

The strength of magnetic field around the current conductor is

Question # 18

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

Question # 19

The direction of lines of force depends upon the direction of

Question # 20

The SI unit of magnetic flux is.

Question # 21

NmA-1 is commonly called:

Question # 22

Weber is a unit of

Question # 23

The SI unit of magnetic flux is

Question # 24

The current is measured in

Question # 25

F = I(L x B) is a

Question # 26

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

Question # 27

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 28

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

Question # 29

In the region surrounding a current carrying wire:

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The unit of flux density is also given by
A. Weber/m2or Wb . m-2
B. Weber/mor Wb . m
C. Weber/mor Wb . m-1
D. Weber or Wb
2

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
3 When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
A. circular
B. elliptical
C. cycloid
D. straight line
4 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
5 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
6 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
7 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
8 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
9 The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by
A. F=IB/L
B. F= L x B/I
C. F = IL x B
D. F = IL . B
10 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these

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