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

In the formula B= µ̻ nl, the symbol n denotes:

Question # 2

The SI unit of magnetic flux is.

Question # 3

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

Question # 4

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 5

CRO deflects the beam of

Question # 6

Ammeter is used to measure

Question # 7

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 # 8

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

Question # 9

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

Question # 10

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 # 11

The pointer of a magnetic compass:

Question # 12

A field is uniform and much stronger:

Question # 13

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

Question # 14

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

Question # 15

The magnetic field outside the solenoid due to current is

Question # 16

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 17

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 18

In a moving coil galvanometer, the deflecting couple depends upon

Question # 19

A galvanometer is an instrument used to

Question # 20

Magnetic lines of force:

Question # 21

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

Question # 22

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

Question # 23

A current carrying conductor sets up its own:

Question # 24

The permeability of free space is measured in:

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

Galvanometer is a device used for the detection of

Question # 29

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 # 30

Tesla is the unit of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
2 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
3 In the expression of force experienced by electron, the direction of both v and B are
A. parallel
B. zero
C. perpendicular
D. none of them
4 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these
5 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
6 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
7 In a moving coil galvanometer, the deflecting couple depends upon
A. area of the coil
B. number of turns of coil
C. value of magnetic field
D. all of the above
8 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
9 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
10 'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
A. 0
B. 1
C. 0.5
D. -1

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