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 most suitable material for permanent magnet is

Question # 2

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

Question # 3

The current is measured in

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

The force acting on a charge moving in a magnetic field

Question # 8

F = I(L x B) is a

Question # 9

Lorentz force is defined as

Question # 10

A resistance used in galvanometer to make it voltmeter is called

Question # 11

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

Question # 12

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

Question # 13

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 14

The permeability of free space is measured in:

Question # 15

The CRO is used for displaying the waveform of a given

Question # 16

Magnetic flux and flux density are related by

Question # 17

The strength of magnetic field around the current conductor is

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

The voltage increases linearly with

Question # 22

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

Question # 23

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

Question # 24

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 # 25

Electron gun consist of

Question # 26

The magnetic field inside a solenoid can be increased by:

Question # 27

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

Question # 28

Resistance is measured in

Question # 29

Galvanometer is a device used for the detection of

Question # 30

The field around a moving charge is called

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
2 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
A. 5N
B. 4N
C. 1.5N
D. 6N
3 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
4 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°
5 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
A. n/AL
B. Al/n
C. nAL
D. nA/L
6 The strength of magnetic field around the current conductor is
A. Smaller near the conductor
B. Greater near the conductor
C. Greater at the large distance from the conductor
D. Constant near and away from the conductor
7 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)
8 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
9 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
10 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above

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