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

Galvanometer is a device used for the detection of

Question # 2

The SI unit of magnetic flux is.

Question # 3

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

Question # 4

F = I(L x B) is a

Question # 5

The current is measured in

Question # 6

The gavanometer constant of a moving coil galvanometer is given by

Question # 7

The current sensitivity of the galvanometer is

Question # 8

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

Question # 9

How many number of anodes used in electron gun

Question # 10

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 # 11

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

Question # 12

A resistance used in voltmeter is called

Question # 13

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

Question # 14

For the conversion of galvanometer into voltmeter, we connect a

Question # 15

The force experienced by charged particle is maximum, if it moves

Question # 16

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 17

A galvanometer is an instrument used to

Question # 18

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

Question # 19

The pointer of a magnetic compass:

Question # 20

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

Question # 21

A long wire wound tightly on a cylindrical core is called:

Question # 22

To convert galvanometer into ammeter we connect

Question # 23

The field around a moving charge is called

Question # 24

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

Question # 25

The most suitable material for permanent magnet is

Question # 26

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

Question # 27

Magnetic induction is also called as:

Question # 28

The SI unit of flux density is

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
2 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
3 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
4 The magnetic field inside a solenoid can be increased by:
A. Increasing n
B. Decreasing I
C. Increasing I
D. By using iron core within solenoid
5 The force experienced by an electron projected in a magnetic field B with a velocity V is given by
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c
6 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
7 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
8 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
9 In a moving coil galvanometer, the deflecting couple depends upon
A. area of the coil
B. number of turns of coil
C. value of magnetic field
D. all of the above
10 Magnetic induction is also called as:
A.

Ampere’s law

B.

Faraday’s law

C.

Lenz’s law

D.

Newton’s law

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