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

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

Question # 3

The direction of lines of force depends upon the direction of

Question # 4

The SI unit of magnetic flux is

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

For the conversion of galvanometer into voltmeter, we connect a

Question # 9

The unit of magnetic flux is

Question # 10

Which is modified form of galvanometer

Question # 11

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 # 12

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

Question # 13

In the region surrounding a current carrying wire:

Question # 14

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

Question # 15

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 16

Amperean path is a:

Question # 17

The magnetic field outside the solenoid due to current is

Question # 18

The current is measured in

Question # 19

The magnetic field inside a solenoid can be increased by:

Question # 20

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

Question # 21

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

Question # 22

The torque per unit twist of coil is called

Question # 23

A charged particle moving at right angle to the magnetic field will experience

Question # 24

A resistance used in galvanometer to make it voltmeter is called

Question # 25

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

Question # 26

if the field is directed along the normal to the area, then flux is:

Question # 27

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 28

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

Question # 29

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 # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 For the conversion of galvanometer into voltmeter, we connect a
A. small resistance in series with galvanometer
B. small resistance in parallel with galvanometer
C. high resistance in parallel with galvanometer
D. high resistance series with galvanometer
2 In the formula B= µ̻ nl, the symbol n denotes:
A.

Total number of turns of solenoid

B.

Number of turns per unit length

C.

Number of turns per unit volume

D.

Numbers of turns per unit area
3 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
4 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these
5 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
6 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
7 When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
A. changed
B. zero
C. unchanged
D. none of these
8 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
9 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
10 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)

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