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

The SI unit of magnetic permeability is

Question # 3

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

Question # 4

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 5

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

Question # 6

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 7

Magnetic flux and flux density are related by

Question # 8

Lorentz force is defined as

Question # 9

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 10

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

Question # 11

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 12

The angle of deflection of coil can be measured by the

Question # 13

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

Question # 14

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

Question # 15

The CRO is used for displaying the waveform of a given

Question # 16

CRO deflects the beam of

Question # 17

The current sensitivity of the galvanometer is

Question # 18

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

Question # 19

if the field is directed along the normal to the area, then flux is:

Question # 20

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 # 21

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

Question # 22

The SI unit of magnetic flux is

Question # 23

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 # 24

Current is measured in

Question # 25

For the conversion of galvanometer into voltmeter, we connect a

Question # 26

The magnetic field outside the solenoid due to current is

Question # 27

The most suitable material for permanent magnet is

Question # 28

Which is modified form of galvanometer

Question # 29

Magnetic induction is also called as:

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
2 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
3 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
4 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron
5 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above
6 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
7 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
8 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
9 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
10 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these

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