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

Method "lamp and scale arrangement" used to measure the

Question # 2

Centripetal force for electron is given by

Question # 3

The most suitable material for permanent magnet is

Question # 4

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 # 5

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

Question # 6

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

Question # 7

The magnetic field inside a solenoid can be increased by:

Question # 8

In the formula B= µ̻ nl, the symbol n denotes:

Question # 9

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 10

The pointer of a magnetic compass:

Question # 11

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

Question # 12

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 13

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

Question # 14

How many number of anodes used in electron gun

Question # 15

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

Question # 16

A current carrying conductor sets up its own:

Question # 17

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

Question # 18

magnetic field is a:

Question # 19

F = I(L x B) is a

Question # 20

The unit of flux density is also given by

Question # 21

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

Question # 22

For the conversion of galvanometer into voltmeter, we connect a

Question # 23

Weber is a unit of

Question # 24

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

Question # 25

The SI unit of magnetic flux is

Question # 26

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

Question # 27

To convert galvanometer into ammeter we connect

Question # 28

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 # 29

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

Question # 30

The force acting on a charge moving in a magnetic field

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
2 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
3 The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by
A. F=eVB
B. F=e2V/B
C. F=e/VB
D. F=B2/ev
4 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
5 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)
6 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
7 Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as
A. IT = 10-4 G
B. IT = 105G
C. IT = 103G
D. IT = 104G
8 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
9 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above
10 A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is
A. Zero
B. 105 m
C. 10-10N
D. 108N

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