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

Question # 2

The strength of magnetic field around the current conductor is

Question # 3

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

Question # 4

In a moving coil galvanometer, the deflecting couple depends upon

Question # 5

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 6

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 7

The SI unit of magnetic flux is.

Question # 8

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

Question # 9

A galvanometer is an instrument used to

Question # 10

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

Question # 11

The pointer of a magnetic compass:

Question # 12

Amperean path is a:

Question # 13

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 # 14

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 # 15

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

Question # 16

Flurescent screen is a screen where visible spot

Question # 17

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

To convert galvanometer into ammeter we connect

Question # 22

The gavanometer constant of a moving coil galvanometer is given by

Question # 23

The unit of flux density is also given by

Question # 24

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 25

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 26

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 # 27

The CRO is used for displaying the waveform of a given

Question # 28

The force acting on a charge moving in a magnetic field

Question # 29

The unit of magnetic flux is

Question # 30

Electron gun consist of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
2 'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
A. 0
B. 1
C. 0.5
D. -1
3 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:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
4 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
5 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
6 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these
7 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
8 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
A. dead beat galvanometer
B. stable galvanometer
C. shunt galvanometer
D. sensitive galvanomter
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 The force experienced by an electron projected in a magnetic field B with a velocity V is given by
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c

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