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

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

Question # 2

F = I(L x B) is a

Question # 3

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

Question # 4

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

Question # 5

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 # 6

CRO deflects the beam of

Question # 7

Ammeter is used to measure

Question # 8

A current carrying conductor sets up its own:

Question # 9

The current sensitivity of the galvanometer is

Question # 10

The gavanometer constant of a moving coil galvanometer is given by

Question # 11

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

Question # 12

Amperean path is a:

Question # 13

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 14

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

Question # 15

Avo-meter is used of measure the

Question # 16

For the conversion of galvanometer into voltmeter, we connect a

Question # 17

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

Question # 18

The force acting on a charge moving in a magnetic field

Question # 19

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 # 20

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

Question # 21

A voltmeter is used to measure the

Question # 22

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

Question # 23

The vector representation of force experience give the direction of

Question # 24

The most suitable material for permanent magnet is

Question # 25

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 26

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

Question # 27

Current is measured in

Question # 28

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

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
2 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
3 The force experienced by an electron projected in a magnetic field B with a velocity V is given by
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c
4 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
5 For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as
A. modification
B. voltage
C. current
D. resistance
6 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
7 A relationship between Gauses of magnetic induction and Tesla(T) is given by
A. G 10-3T
B. G = 10-2T
C. G = 10-4T
D. G = 10-1T
8 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
9 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
10 A field is uniform and much stronger:
A.

Inside a long solenoid

B.

Outside a long solenoid

C.

At the end of a long solenoid

D.

At the central point of long solenoid

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