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

NmA-1 is commonly called:

Question # 2

The force acting on a charge moving in a magnetic field

Question # 3

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

Question # 4

The angle of deflection of coil can be measured by the

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

A galvanometer is an instrument used to

Question # 9

Avo-meter is used of measure the

Question # 10

The SI unit of magnetic flux is.

Question # 11

The gavanometer constant of a moving coil galvanometer is given by

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

To convert galvanometer into ammeter we connect

Question # 16

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

Question # 17

Magnetic lines of force:

Question # 18

The current sensitivity of the galvanometer is

Question # 19

Lorentz force is defined as

Question # 20

Ammeter is used to measure

Question # 21

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

Question # 22

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 # 23

A resistance used in galvanometer to make it voltmeter is called

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

The voltage increases linearly with

Question # 28

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 # 29

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

Question # 30

Galvanometer is a device used for the detection of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
2 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
3 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
4 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
5 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
6 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
7 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current
8 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
9 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
10 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A

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