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

F = I(L x B) is a

Question # 2

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

Question # 3

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

Question # 4

Electron gun consist of

Question # 5

A long wire wound tightly on a cylindrical core is called:

Question # 6

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 7

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

Question # 8

Centripetal force for electron is given by

Question # 9

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

Question # 10

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

Question # 11

Tesla is the unit of

Question # 12

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

Question # 13

Resistance is measured in

Question # 14

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 15

If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:

Question # 16

The current is measured in

Question # 17

The field around a moving charge is called

Question # 18

Flurescent screen is a screen where visible spot

Question # 19

For the conversion of galvanometer into voltmeter, we connect a

Question # 20

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

Question # 21

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

Question # 22

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

Question # 23

Magnetic induction is also called as:

Question # 24

Ammeter is used to measure

Question # 25

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

Question # 26

CRO deflects the beam of

Question # 27

Lorentz force is defined as

Question # 28

The CRO is used for displaying the waveform of a given

Question # 29

How many number of anodes used in electron gun

Question # 30

The SI unit of magnetic flux is.

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these
2 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
3 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
4 When the charged particle is projected at right angles to the field, then experienced by it will be:
A. Maximum
B. Zero
C. qvB
D. Both (A) and (B)
5 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
6 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
7 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
8 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
9 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
10 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these

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