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

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 2

When current passes through a solenoid coil, it behaves like a

Question # 3

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

Question # 4

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

Question # 5

The most suitable material for permanent magnet is

Question # 6

The unit of flux density is also given by

Question # 7

A resistance used in galvanometer to make it voltmeter is called

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

Which is modified form of galvanometer

Question # 12

The pointer of a magnetic compass:

Question # 13

Method "lamp and scale arrangement" used to measure the

Question # 14

Electron gun consist of

Question # 15

The permeability of free space is measured in:

Question # 16

The vector representation of force experience give the direction of

Question # 17

magnetic field is a:

Question # 18

Ammeter is used to measure

Question # 19

A beam of electrons is provided by an

Question # 20

Weber is a unit of

Question # 21

A resistance used in voltmeter is called

Question # 22

Current is measured in

Question # 23

Magnetic flux and flux density are related by

Question # 24

For the conversion of galvanometer into voltmeter, we connect a

Question # 25

In the region surrounding a current carrying wire:

Question # 26

The SI unit of magnetic flux is

Question # 27

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 28

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 29

Galvanometer is a device used for the detection of

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
3 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
4 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
5 The force experienced by charged particle is maximum, if it moves
A. parallel to magnetic field
B. perpendicular to magnetic field
C. opposite to the magnetic field
D. none of these
6 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
7 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
8 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
9 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)
10 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

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