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

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

Question # 2

Electron gun consist of

Question # 3

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

Question # 4

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:

Question # 5

For the conversion of galvanometer into voltmeter, we connect a

Question # 6

In the region surrounding a current carrying wire:

Question # 7

Weber is a unit of

Question # 8

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

Question # 9

The angle of deflection of coil can be measured by the

Question # 10

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 11

Method "lamp and scale arrangement" used to measure the

Question # 12

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 13

Centripetal force for electron is given by

Question # 14

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

Question # 15

A galvanometer is an instrument used to

Question # 16

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 17

NmA-1 is commonly called:

Question # 18

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

Question # 19

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

Question # 20

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 # 21

A solenoid is a coil of wire which is:

Question # 22

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

Question # 23

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

Question # 24

In a moving coil galvanometer, the deflecting couple depends upon

Question # 25

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 # 26

Resistance is measured in

Question # 27

Magnetic flux and flux density are related by

Question # 28

The SI unit of magnetic induction is

Question # 29

Avo-meter is used of measure the

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
2 For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as
A. modification
B. voltage
C. current
D. resistance
3 A relationship between Gauses of magnetic induction and Tesla(T) is given by
A. G 10-3T
B. G = 10-2T
C. G = 10-4T
D. G = 10-1T
4 The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by
A. F =q(v/B)
B. F=q2(v x B)
C. F=q(v x B)
D. F= vx B
5 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
6 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
7 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2
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 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
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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