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 a moving coil galvanometer, the deflecting couple depends upon

Question # 2

It is customary represent a current flowing towards the reader by a symbol

Question # 3

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

Question # 4

The magnetic field inside a solenoid can be increased by:

Question # 5

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

Question # 6

Flurescent screen is a screen where visible spot

Question # 7

A solenoid is a coil of wire which is:

Question # 8

The force acting on a charge moving in a magnetic field

Question # 9

Magnetic lines of force:

Question # 10

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

Question # 11

The current sensitivity of the galvanometer is

Question # 12

The SI unit of magnetic permeability is

Question # 13

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

Question # 14

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Question # 15

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 # 16

The permeability of free space is measured in:

Question # 17

Amperean path is a:

Question # 18

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 19

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

Question # 20

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

Question # 21

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is

Question # 22

The unit of magnetic flux is

Question # 23

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

Question # 24

Magnetic induction is also called as:

Question # 25

Method "lamp and scale arrangement" used to measure the

Question # 26

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 27

For the conversion of galvanometer into voltmeter, we connect a

Question # 28

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 29

The field around a moving charge is called

Question # 30

A voltmeter is used to measure the

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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)
2 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
3 A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is
A. Zero
B. 105 m
C. 10-10N
D. 108N
4 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
5 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
6 When the charged particle is projected at right angles to the field, then experienced by it will be:
A. Maximum
B. Zero
C. qvB
D. Both (A) and (B)
7 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
8 If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is
A. F = B2
B. F = 0
C. F = B
D. F = B/2
9 Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
10 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2

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