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

Flurescent screen is a screen where visible spot

Question # 2

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

Question # 3

How many number of anodes used in electron gun

Question # 4

The torque per unit twist of coil is called

Question # 5

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

Question # 6

The SI unit of magnetic flux is

Question # 7

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

Question # 8

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

Question # 9

For the conversion of galvanometer into voltmeter, we connect a

Question # 10

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

Question # 11

The current sensitivity of the galvanometer is

Question # 12

A resistance used in galvanometer to make it voltmeter is called

Question # 13

Lorentz force is defined as

Question # 14

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 # 15

Amperean path is a:

Question # 16

The current is measured in

Question # 17

A beam of electrons is provided by an

Question # 18

The permeability of free space is measured in:

Question # 19

Current is measured in

Question # 20

The pointer of a magnetic compass:

Question # 21

Method "lamp and scale arrangement" used to measure the

Question # 22

Magnetic induction is also called as:

Question # 23

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 24

Which one of the following relations is correct?

Question # 25

The gavanometer constant of a moving coil galvanometer is given by

Question # 26

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

Question # 27

Electron gun consist of

Question # 28

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

Question # 29

The SI unit of flux density is.

Question # 30

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
2 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2
3 In order to make a voltmeter, high resistance is connected with galvanometer, in
A. perpendicular
B. may be paralled or pendicular
C. series
D. none of these
4 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
5 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
6 The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by
A. F =q(v/B)
B. F=q2(v x B)
C. F=q(v x B)
D. F= vx B
7 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
8 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
9 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
10 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform

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