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

magnetic field is a:

Question # 2

Magnetic flux and flux density are related by

Question # 3

When current passes through a solenoid coil, it behaves like a

Question # 4

Method "lamp and scale arrangement" used to measure the

Question # 5

The magnetic field in the middle of a solenoid due to current is

Question # 6

A resistance used in voltmeter is called

Question # 7

A voltmeter is used to measure the

Question # 8

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

Question # 9

The pointer of a magnetic compass:

Question # 10

It is customary represent a current flowing towards the reader by a symbol

Question # 11

The magnetic field inside a solenoid can be increased by:

Question # 12

In the expression of force experienced by electron, the direction of both v and B are

Question # 13

The SI unit of magnetic permeability is

Question # 14

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

Question # 15

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 16

A current carrying conductor sets up its own:

Question # 17

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

Question # 18

A field is uniform and much stronger:

Question # 19

The force acting on a charge moving in a magnetic field

Question # 20

The vector representation of force experience give the direction of

Question # 21

The unit of flux density is also given by

Question # 22

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is

Question # 23

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

Question # 24

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

Question # 25

Which one of the following relations is correct?

Question # 26

To convert galvanometer into ammeter we connect

Question # 27

The current sensitivity of the galvanometer is

Question # 28

Lorentz force is defined as

Question # 29

The SI unit of magnetic flux is

Question # 30

The CRO is used for displaying the waveform of a given

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
A. circular
B. elliptical
C. cycloid
D. straight line
2 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
3 When some compass needles are placed on a card board along a circle with the center at the wire, they will
A.

Point the direction of N-S

B.

Set themselves tangential to the circle

C.

Point in the direction of E-W

D.

None of these
4 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
5 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance
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 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
8 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
9 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
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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