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

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

Question # 2

The SI unit of magnetic induction is

Question # 3

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 # 4

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

Question # 5

A resistance used in voltmeter is called

Question # 6

CRO deflects the beam of

Question # 7

The angle of deflection of coil can be measured by the

Question # 8

The vector representation of force experience give the direction of

Question # 9

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 10

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 # 11

To convert galvanometer into ammeter we connect

Question # 12

A field is uniform and much stronger:

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

Tesla is the unit of

Question # 17

How many number of anodes used in electron gun

Question # 18

The unit of flux density is also given by

Question # 19

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

Question # 20

In the expression of force experienced by electron, the direction of both v and B are

Question # 21

Weber is a unit of

Question # 22

The SI unit of flux density 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

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

Question # 25

Magnetic lines of force:

Question # 26

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

Question # 27

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 # 28

The current is measured in

Question # 29

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

Question # 30

The torque per unit twist of coil is called

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
A. changed
B. zero
C. unchanged
D. none of these
2 Lorentz force is defined as
A. q(E + V x B)
B. q(E x B + V)
C. q(E x V + B)
D. q(E x B)
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 long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
5 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
6 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
7 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
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
A. n/AL
B. Al/n
C. nAL
D. nA/L
9 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
10 The current is measured in
A. volts
B. watt
C. ampere
D. ohm

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