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

For the conversion of galvanometer into voltmeter, we connect a

Question # 2

Electron gun consist of

Question # 3

The most suitable material for permanent magnet is

Question # 4

The sources of magnetic field are

Question # 5

The SI unit of flux density is.

Question # 6

The voltage increases linearly with

Question # 7

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

Question # 8

A resistance used in galvanometer to make it voltmeter is called

Question # 9

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

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

Amperean path is a:

Question # 12

The force acting on a charge moving in a magnetic field

Question # 13

The SI unit of magnetic induction is tesla which is equal to

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

CRO deflects the beam of

Question # 19

Magnetic flux and flux density are related by

Question # 20

Ammeter is used to measure

Question # 21

The CRO is used for displaying the waveform of a given

Question # 22

Galvanometer is a device used for the detection of

Question # 23

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

Question # 24

The magnetic field in the middle of a solenoid due to current is

Question # 25

The strength of magnetic field around the current conductor is

Question # 26

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

Question # 27

The current sensitivity of the galvanometer is

Question # 28

The magnetic field inside a solenoid can be increased by:

Question # 29

The unit of magnetic flux is

Question # 30

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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)
2 When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into
A. Voltmeter
B. Avometer
C. Ammeter
D. None of these
3 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
4 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
5 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
6 The e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
7 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
8 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
9 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
10

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field

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