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

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 # 2

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

Question # 3

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

Question # 4

Centripetal force for electron is given by

Question # 5

The SI unit of flux density is

Question # 6

The SI unit of flux density is.

Question # 7

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

Question # 8

The SI unit of magnetic permeability is

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

Tesla is the unit of

Question # 16

A voltmeter is used to measure the

Question # 17

Electron gun consist of

Question # 18

The SI unit of magnetic flux is

Question # 19

The permeability of free space is measured in:

Question # 20

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

Question # 21

A field is uniform and much stronger:

Question # 22

The magnetic field outside the solenoid due to current is

Question # 23

Amperean path is a:

Question # 24

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

Question # 25

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

Question # 26

For the conversion of galvanometer into voltmeter, we connect a

Question # 27

A current carrying conductor sets up its own:

Question # 28

Current is measured in

Question # 29

The most suitable material for permanent magnet is

Question # 30

The pointer of a magnetic compass:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
A. n/AL
B. Al/n
C. nAL
D. nA/L
2 In a straight current carrying conductor, the direction of magnetic field can be found by
A. right hand rule
B. left hand rule
C. head to tall rule
D. none of these
3 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
4 When some compass needles are placed on a card board along a circle with the center at the wire, they will
A.

Point the direction of N-S

B.

Set themselves tangential to the circle

C.

Point in the direction of E-W

D.

None of these
5 For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as
A. modification
B. voltage
C. current
D. resistance
6 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
7 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
8 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
9 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these
10 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these

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