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 formula B= µ̻ nl, the symbol n denotes:

Question # 2

The field around a moving charge is called

Question # 3

Method "lamp and scale arrangement" used to measure the

Question # 4

Magnetic lines of force:

Question # 5

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

Question # 6

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

Question # 7

The magnetic field inside a solenoid can be increased by:

Question # 8

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 9

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

Question # 10

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

Question # 11

For the conversion of galvanometer into voltmeter, we connect a

Question # 12

The most suitable material for permanent magnet is

Question # 13

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 # 14

A field is uniform and much stronger:

Question # 15

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

Question # 16

A resistance used in voltmeter is called

Question # 17

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

Question # 18

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

Question # 19

The current is measured in

Question # 20

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 # 21

Lorentz force is defined as

Question # 22

The gavanometer constant of a moving coil galvanometer is given by

Question # 23

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 24

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 # 25

Current is measured in

Question # 26

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

Question # 27

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

Question # 28

The SI unit of magnetic induction is tesla which is equal to

Question # 29

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

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 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
2 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
3 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
4 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
5 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
6 In the formula B= µ̻ nl, the symbol n denotes:
A.

Total number of turns of solenoid

B.

Number of turns per unit length

C.

Number of turns per unit volume

D.

Numbers of turns per unit area
7 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
8 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
9 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
A. dead beat galvanometer
B. stable galvanometer
C. shunt galvanometer
D. sensitive galvanomter
10 When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is
A. 90°
B. 75°
C. 0°
D. 180°

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