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 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 # 2

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

Question # 3

The SI unit of magnetic flux is

Question # 4

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 # 5

The unit of magnetic flux is

Question # 6

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

Question # 7

Ammeter is used to measure

Question # 8

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

Question # 9

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

Question # 10

In the region surrounding a current carrying wire:

Question # 11

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 12

The most suitable material for permanent magnet is

Question # 13

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 14

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

Question # 15

Weber is a unit of

Question # 16

When current passes through a solenoid coil, it behaves like a

Question # 17

The SI unit of flux density is

Question # 18

The unit of flux density is also given by

Question # 19

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

Question # 20

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

Question # 21

Resistance is measured in

Question # 22

Flurescent screen is a screen where visible spot

Question # 23

The SI unit of magnetic flux is.

Question # 24

Magnetic induction is also called as:

Question # 25

A voltmeter is used to measure the

Question # 26

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

Question # 27

Method "lamp and scale arrangement" used to measure the

Question # 28

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 # 29

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

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 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:
A. -y direction
B. +y direction
C. +z direction
D. -z direction
2 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
3 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
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter
4 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
5 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
6 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
7 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
8 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
9 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
10 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)

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