ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

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

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

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 # 6

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

Question # 7

A field is uniform and much stronger:

Question # 8

A resistance used in voltmeter is called

Question # 9

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 10

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 11

Flurescent screen is a screen where visible spot

Question # 12

The unit of flux density is also given by

Question # 13

Method "lamp and scale arrangement" used to measure the

Question # 14

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

Question # 15

The sources of magnetic field are

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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 The force experienced by charged particle is maximum, if it moves
A. parallel to magnetic field
B. perpendicular to magnetic field
C. opposite to the magnetic field
D. none of these
3 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
4 When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
A. circular
B. elliptical
C. cycloid
D. straight line
5 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
6 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
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter
7 In order to make a voltmeter, high resistance is connected with galvanometer, in
A. perpendicular
B. may be paralled or pendicular
C. series
D. none of these
8 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
9 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
10 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

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