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 gavanometer constant of a moving coil galvanometer is given by

Question # 2

The unit of flux density is also given by

Question # 3

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

Question # 4

The SI unit of magnetic flux is.

Question # 5

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

Question # 6

A resistance used in voltmeter is called

Question # 7

The magnetic field outside the solenoid due to current is

Question # 8

A field is uniform and much stronger:

Question # 9

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 # 10

Avo-meter is used of measure the

Question # 11

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 12

The SI unit of magnetic permeability is

Question # 13

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 # 14

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

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

The field around a moving charge is called

Question # 19

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 20

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

Question # 21

Ammeter is used to measure

Question # 22

The angle of deflection of coil can be measured by the

Question # 23

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 24

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 25

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 26

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

Question # 27

A voltmeter is used to measure the

Question # 28

F = I(L x B) is a

Question # 29

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

Question # 30

The permeability of free space is measured in:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
2 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
3 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
4 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
5 The force experienced by an electron projected in a magnetic field B with a velocity V is given by
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c
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 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
8 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
9 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
10 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

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