ECAT Pre General Science Chapter 14 online mcq test with answers for Physics chapter 14 (Electromagnetism)

Question # 1

The permeability of free space is measured in:

Wb/Am A
Wb A/m B
Am/Wb C
m/Web A D
None of these E

Question # 2

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

avometer A
millimeter B
voltmeter C
none of these D

Question # 3

Magnetic induction is also called as:

Ampere’s law
A
Faraday’s law
B
Lenz’s law
C
Newton’s law
D
Coulomb’s law
E

Question # 4

Magnetic flux and flux density are related by

Flux density = flux x area A
Flux density = flux / area B
Flux density = flux - area C
None of these D

Question # 5

The vector representation of force experience give the direction of

magnetic field A
current B
length of conductor C
force D

Question # 6

The unit of flux density is also given by

Weber/m²or Wb . m^-2 A
Weber/mor Wb . m B
Weber/mor Wb . m^-1 C
Weber or Wb D

Question # 7

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

5N A
4N B
1.5N C
6N D

Question # 8

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

V/Br A
V/B²r² B
V²/Br² C
V²/Br D

Question # 9

Avo-meter is used of measure the

current, voltage A
voltage, resistance B
resistance, current C
current, voltage and resistance D

Question # 10

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

Greater than 300 A
Smaller than 300 B
Equal to 300 C
Any of (A) or (B) D
Any of (A) or(C) E

Question # 11

The current is measured in

volts A
watt B
ampere C
ohm D

Question # 12

Which is modified form of galvanometer

potentiometer A
battery B
voltmeter C
slide wire bridge D

Question # 13

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

F=eVB A
F=e²V/B B
F=e/VB C
F=B²/ev D

Question # 14

A charged particle moving at right angle to the magnetic field will experience

minimum force A
maximum force B
zero C
moderate force D

Question # 15

The SI unit of magnetic induction is tesla which is equal to

Newton/ampere-meter or N/A-m A
Newton/ampere²-meter or N/A²-m B
Newton/ampere²-meter² or N/A²-m² C
Newton/ampere²-meter²or N/A²-m² D

Question # 16

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

magnetic flux A
magnetic flux density B
magnetic induction C
magnetic field intensity D

Question # 17

The SI unit of flux density is

Newton/Amp-meter A
Newton-m/Ampere B
Newton-m/Amp² C
Newton-Amp/meter D

Question # 18

The unit of magnetic flux is

Weber-m² A
Weber-m³ B
Henry C
Weber D

Question # 19

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

Potentiometer A
Solenoid B
Toroid C
Wheat and stone bridge D
None of these E

Question # 20

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

dead beat galvanometer A
stable galvanometer B
shunt galvanometer C
sensitive galvanomter D

Question # 21

In the region surrounding a current carrying wire:

A magnetic field is setup
A
The lines of force are elliptical
B
Direction of lines of forces depends upon direction of current
C
Both (A) and (C)
D
All of these E

Question # 22

The angle of deflection of coil can be measured by the

one method A
three method B
two method C
none of these D

Question # 23

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

loop A
circle B
bar magnet C
none of these D

Question # 24

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

ammeter A
voltmeter B
galvanometer C
avo-meter D

Question # 25

The SI unit of magnetic flux is

NmA^-2 A
NmA^-1 B
NAm^-1 C
Nm²A^-1 D

Question # 26

Method "lamp and scale arrangement" used to measure the

angle of deflection A
restoring torque B
magnetic field strength C
current D

Question # 27

The strength of magnetic field around the current conductor is

Smaller near the conductor A
Greater near the conductor B
Greater at the large distance from the conductor C
Constant near and away from the conductor D

Question # 28

The CRO is used for displaying the waveform of a given

current A
voltage B
both of them C
none of them D

Question # 29

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

90° A
75° B
0° C
180° D

Question # 30

The SI unit of magnetic induction is

Gauses A
Tesla B
Weber C
Weber² D

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	the current is pass through the straight wire. The magnetic field established around it has its lines of force:	A. Circular and endless B. Oval in shape and endless C. Straight D. Parabolic
3	Weber is a unit of	A. magnetic flux B. magnetic filed intensity C. magnetic induction D. magnetic flux density
4	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	A. 5N B. 4N C. 1.5N D. 6N
5	Resistance is measured in	A. volts B. ampere C. ohm D. watt
6	Ammeter is used to measure	A. voltage B. resistance C. voltage and current D. current
7	Total number of turns on 0.15 m length solenoid is 300. the value of n is:	A. Greater than 300 B. Smaller than 300 C. Equal to 300 D. Any of (A) or (B)
8	The force experienced by charged particle is maximum, if it moves	A. parallel to magnetic field B. perpendicular to magnetic field C. opposite to the magnetic field D. none of these
9	In the expression of force experienced by electron, the direction of both v and B are	A. parallel B. zero C. perpendicular D. none of them
10	CRO deflects the beam of	A. proton B. a-particle C. electron D. neutron

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ECAT Pre General Science Physics Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

ECAT Pre General Science Physics Chapter 14 Electromagnetism