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

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

Question # 2

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

Question # 3

Which one of the following relations is correct?

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

The current sensitivity of the galvanometer is

Question # 9

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 # 10

Galvanometer is a device used for the detection of

Question # 11

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

Question # 12

Flurescent screen is a screen where visible spot

Question # 13

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

Question # 14

A resistance used in voltmeter is called

Question # 15

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

Question # 16

The direction of lines of force depends upon the direction of

Question # 17

The unit of flux density is also given by

Question # 18

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

Question # 19

A current carrying conductor sets up its own:

Question # 20

Magnetic induction is also called as:

Question # 21

The CRO is used for displaying the waveform of a given

Question # 22

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

Question # 23

The unit of magnetic flux is

Question # 24

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 25

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

Question # 26

Weber is a unit of

Question # 27

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

Question # 28

A beam of electrons is provided by an

Question # 29

Method "lamp and scale arrangement" used to measure the

Question # 30

Electron gun consist of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
A. magnetic flux
B. magnetic induction
C. magnetic field
D. self inductance
2 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
3 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and 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 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
6 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
7 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
8

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
9 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
10 At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:
A. -y direction
B. +y direction
C. +z direction
D. -z direction

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