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

Which one of the following relations is correct?

Question # 3

Method "lamp and scale arrangement" used to measure the

Question # 4

Electron gun consist of

Question # 5

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 6

A resistance used in galvanometer to make it voltmeter is called

Question # 7

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 # 8

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 # 9

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

Question # 10

The unit of flux density is also given by

Question # 11

Galvanometer is a device used for the detection of

Question # 12

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

Question # 13

The most suitable material for permanent magnet is

Question # 14

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 # 15

The SI unit of flux density is

Question # 16

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

Question # 17

CRO deflects the beam of

Question # 18

The magnetic field in the middle of a solenoid due to current is

Question # 19

Lorentz force is defined as

Question # 20

Magnetic lines of force:

Question # 21

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

Question # 22

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

Question # 23

Avo-meter is used of measure the

Question # 24

For the conversion of galvanometer into voltmeter, we connect a

Question # 25

The torque per unit twist of coil is called

Question # 26

A resistance used in voltmeter is called

Question # 27

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

Question # 28

F = I(L x B) is a

Question # 29

To convert galvanometer into ammeter we connect

Question # 30

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:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Magnetic induction is also called as:
A.

Ampere’s law

B.

Faraday’s law

C.

Lenz’s law

D.

Newton’s law
2

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
3 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
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 Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:
A. Maximum
B. Minimum
C. Zero
D. Very small
6 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
7 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these
8 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
9 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
10 In the expression of force experienced by electron, the direction of both v and B are
A. parallel
B. zero
C. perpendicular
D. none of them

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