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

Question # 2

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 # 3

Centripetal force for electron is given by

Question # 4

How many number of anodes used in electron gun

Question # 5

The unit of magnetic flux is

Question # 6

Amperean path is a:

Question # 7

In the region surrounding a current carrying wire:

Question # 8

Avo-meter is used of measure the

Question # 9

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

Question # 10

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 11

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

Question # 12

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

Question # 13

The pointer of a magnetic compass:

Question # 14

Magnetic induction is also called as:

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 SI unit of flux density is.

Question # 17

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 18

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 # 19

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

Question # 20

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 21

The torque per unit twist of coil is called

Question # 22

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

Question # 23

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

Question # 24

The force acting on a charge moving in a magnetic field

Question # 25

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 # 26

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 # 27

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Question # 28

Method "lamp and scale arrangement" used to measure the

Question # 29

The CRO is used for displaying the waveform of a given

Question # 30

A field is uniform and much stronger:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
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

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
4 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
5 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
6 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current
7 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
8 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
9 The e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
10 Current is measured in
A. volts
B. watt
C. ohm
D. ampere

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