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

Question # 2

In the formula B= µ̻ nl, the symbol n denotes:

Question # 3

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 # 4

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 # 5

CRO deflects the beam of

Question # 6

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

Question # 7

To convert galvanometer into ammeter we connect

Question # 8

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

Question # 9

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 10

Ammeter is used to measure

Question # 11

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

Question # 12

A solenoid is a coil of wire which is:

Question # 13

The SI unit of magnetic flux is

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

Weber is a unit of

Question # 16

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

Question # 17

The magnetic field inside a solenoid can be increased by:

Question # 18

Magnetic flux and flux density are related by

Question # 19

In a moving coil galvanometer, the deflecting couple depends upon

Question # 20

The unit of flux density is also given by

Question # 21

magnetic field is a:

Question # 22

A beam of electrons is provided by an

Question # 23

A field is uniform and much stronger:

Question # 24

The force acting on a charge moving in a magnetic field

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

A current carrying conductor sets up its own:

Question # 29

A long wire wound tightly on a cylindrical core is called:

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
2 When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
A. circular
B. elliptical
C. cycloid
D. straight line
3 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
4 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
5 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
6 To convert galvanometer into ammeter we connect
A. small resistance in parallel with galvanometer
B. small resistance in series with galvanometer
C. high resistance in series with galvanometer
D. high resistance in parallel with galvanometer
7 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical
8 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
9 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
10 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss

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