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

A resistance used in galvanometer to make it voltmeter is called

Question # 2

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 # 3

The SI unit of magnetic flux is

Question # 4

Weber is a unit of

Question # 5

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

Question # 6

Tesla is the unit of

Question # 7

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

Question # 8

The SI unit of magnetic induction is

Question # 9

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

Question # 10

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

Question # 11

The magnetic field outside the solenoid due to current is

Question # 12

A galvanometer is an instrument used to

Question # 13

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

Question # 14

The torque per unit twist of coil is called

Question # 15

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 16

CRO deflects the beam of

Question # 17

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

Question # 18

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

Question # 19

Centripetal force for electron is given by

Question # 20

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 21

Amperean path is a:

Question # 22

Flurescent screen is a screen where visible spot

Question # 23

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 24

The gavanometer constant of a moving coil galvanometer is given by

Question # 25

It is customary represent a current flowing towards the reader by a symbol

Question # 26

The field around a moving charge is called

Question # 27

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

Question # 28

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

Question # 29

F = I(L x B) is a

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
3 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)
4 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
5 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
6 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
7 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
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 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these
10 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density

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