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

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

Question # 2

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 3

Electron gun consist of

Question # 4

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

Question # 5

The current sensitivity of the galvanometer is

Question # 6

Which is modified form of galvanometer

Question # 7

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 8

The force acting on a charge moving in a magnetic field

Question # 9

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 10

Flurescent screen is a screen where visible spot

Question # 11

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

Question # 12

The unit of magnetic flux is

Question # 13

Magnetic flux and flux density are related by

Question # 14

The torque per unit twist of coil is called

Question # 15

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

Question # 16

Avo-meter is used of measure the

Question # 17

The permeability of free space is measured in:

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

The strength of magnetic field around the current conductor is

Question # 22

The angle of deflection of coil can be measured by the

Question # 23

The SI unit of flux density is

Question # 24

Strength of magnetic field is measured in SI units, in:

Question # 25

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

Question # 26

A resistance used in galvanometer to make it voltmeter is called

Question # 27

Which one of the following relations is correct?

Question # 28

Magnetic lines of force:

Question # 29

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

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 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)
2 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron
3 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
4 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
5 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
6 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current
7 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)
8 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
9 The force experienced by charged particle is maximum, if it moves
A. parallel to magnetic field
B. perpendicular to magnetic field
C. opposite to the magnetic field
D. none of these
10 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these

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