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

The unit of magnetic flux is

Question # 2

Weber is a unit of

Question # 3

A solenoid is a coil of wire which is:

Question # 4

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

Question # 5

Current is measured in

Question # 6

Avo-meter is used of measure the

Question # 7

The SI unit of magnetic induction is

Question # 8

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

Question # 9

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 # 10

Magnetic lines of force:

Question # 11

The field around a moving charge is called

Question # 12

A voltmeter is used to measure the

Question # 13

A resistance used in galvanometer to make it voltmeter is called

Question # 14

The SI unit of magnetic permeability is

Question # 15

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

Question # 16

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Question # 17

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

Question # 18

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

Question # 19

The magnetic field outside the solenoid due to current is

Question # 20

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 21

For the conversion of galvanometer into voltmeter, we connect a

Question # 22

The force experienced by charged particle is maximum, if it moves

Question # 23

The gavanometer constant of a moving coil galvanometer is given by

Question # 24

The torque per unit twist of coil is called

Question # 25

The current is measured in

Question # 26

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 27

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

Question # 28

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

Question # 29

A resistance used in voltmeter is called

Question # 30

Magnetic induction is also called as:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above
2 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
3 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2
4 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
5 To convert galvanometer into ammeter we connect
A. small resistance in parallel with galvanometer
B. small resistance in series with galvanometer
C. high resistance in series with galvanometer
D. high resistance in parallel with galvanometer
6 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
7 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
8 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
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 total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity

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