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

The most suitable material for permanent magnet is

Question # 2

The unit of magnetic flux is

Question # 3

The magnetic field inside a solenoid can be increased by:

Question # 4

A beam of electrons is provided by an

Question # 5

The magnetic field outside the solenoid due to current is

Question # 6

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 7

Which one of the following relations is correct?

Question # 8

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 # 9

Magnetic induction is also called as:

Question # 10

Electron gun consist of

Question # 11

The current sensitivity of the galvanometer is

Question # 12

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

Question # 13

The voltage increases linearly with

Question # 14

The unit of flux density is also given by

Question # 15

Which is modified form of galvanometer

Question # 16

A current carrying conductor sets up its own:

Question # 17

The sources of magnetic field are

Question # 18

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:

Question # 23

The force acting on a charge moving in a magnetic field

Question # 24

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

Question # 25

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 # 26

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

Question # 27

A resistance used in voltmeter is called

Question # 28

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

Question # 29

magnetic field is a:

Question # 30

The strength of magnetic field around the current conductor is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
A. circular
B. elliptical
C. cycloid
D. straight line
2 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these
3 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
4 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
5 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
6 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above
7 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
8 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
9 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
10 Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as
A. IT = 10-4 G
B. IT = 105G
C. IT = 103G
D. IT = 104G

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