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

Question # 1

A resistance used in voltmeter is called

shunt resistance A
high resistance B
low resistance C
zero resistance D

Question # 2

The field around a moving charge is called

magnetic field A
conservative field B
non-conservative field C
none of these D

Question # 3

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 # 4

Method "lamp and scale arrangement" used to measure the

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

Question # 5

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

electric field A
gravitational field B
magnetic flax C
magnetic field D

Question # 6

Tesla is the unit of

Magnetic induction or flux density A
Magnetic flux B
Self inductance C
None of these D

Question # 7

Lorentz force is defined as

q(E + V x B) A
q(E x B + V) B
q(E x V + B) C
q(E x B) D

Question # 8

The most suitable material for permanent magnet is

cobalt A
iron B
steel C
alaminium D

Question # 9

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

IT = 10^-4G A
IT = 10⁵G B
IT = 10³G C
IT = 10⁴G D

Question # 10

Avo-meter is used of measure the

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

Question # 11

The SI unit of flux density is.

Tesla A
Weber B
Gaun C
Weber/meter D

Question # 12

NmA^-1is commonly called:

Weber A
Apmere B
Guass C
Coulomb D
None of these E

Question # 13

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Thumb
A
Curled fingers
B
Middle finger
C
Arm of right hand
D
None of these
E

Question # 14

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

ampere A
volts B
milliampere C
ohm D

Question # 15

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

n/AL A
Al/n B
nAL C
nA/L D

Question # 16

The SI unit of magnetic flux is

NmA^-2 A
NmA^-1 B
NAm^-1 C
Nm²A^-1 D

Question # 17

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

N A
N/Am B
Am/N C
Nm/A D
None of these E

Question # 18

A galvanometer is an instrument used to

measure voltage across a circuit A
detect current in a circuit B
measure current flowing through a circuit C
none of these D

Question # 19

The gavanometer constant of a moving coil galvanometer is given by

K=BAN/C A
K=BN/CA B
K=NAC/B C
K=C/BAN D

Question # 20

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

Maximum
A
Equal to zero
B
Equal to BA
C
Minimum
D
Both (A) and (C)
E

Question # 21

Galvanometer is a device used for the detection of

voltage A
current B
temperature C
pressure D

Question # 22

When the charged particle is projected at right angles to the field, then experienced by it will be:

Maximum A
Zero B
qvB C
Both (A) and (B) D
Both (A) and (C) E

Question # 23

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

magnetic flux A
magnetic induction B
magnetic field C
self inductance D

Question # 24

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 # 25

The SI unit of magnetic induction is

Gauses A
Tesla B
Weber C
Weber² D

Question # 26

Which one of the following relations is correct?

1 Wb-m²= Nm^-1A^-1 A
1 tesla = 104 gausses B
1 Wb-m²= 1 tesla C
All of the above D

Question # 27

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:

Becomes Half A
Becomes double B
Is not affected C
Becomes one fourth D
None of these E

Question # 28

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

avometer A
millimeter B
voltmeter C
none of these D

Question # 29

A voltmeter is used to measure the

potential difference A
current B
temperature C
resistance D

Question # 30

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

Zero A
10⁵m B
10^-10N C
10⁸N D

Sr.#	Question	Answer
1	The galvanometer can be made sensitive if the value of the factor C/BAN is	A. constant B. small C. large D. none of these
2	Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:	A. Maximum B. Minimum C. Zero D. Very small
3	The strength of magnetic field around the current conductor is	A. Smaller near the conductor B. Greater near the conductor C. Greater at the large distance from the conductor D. Constant near and away from the conductor
4	Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:	A. Thumb B. Curled fingers C. Middle finger D. Arm of right hand
5	The SI unit of flux density is	A. Newton/Amp-meter B. Newton-m/Ampere C. Newton-m/Amp² D. Newton-Amp/meter
6	A beam of electrons is provided by an	A. electron gun B. Suppray C. Injection D. None of these
7	The SI unit of magnetic permeability is	A. WB A^-1m^-1 B. WB mA^-1 C. WB Am^-1 D. None of these
8	It is customary represent a current flowing towards the reader by a symbol	A. (x) B. (+) C. (.) D. (-)
9	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)
10	A resistance used in galvanometer to make it voltmeter is called	A. shunt resistance B. high resistance C. zero resistance D. none of these

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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

A resistance used in voltmeter is called

The field around a moving charge is called

In the region surrounding a current carrying wire:

Method "lamp and scale arrangement" used to measure the

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

Tesla is the unit of

Lorentz force is defined as

The most suitable material for permanent magnet is

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

Avo-meter is used of measure the

The SI unit of flux density is.

NmA-1 is commonly called:

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

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

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

The SI unit of magnetic flux is

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

A galvanometer is an instrument used to

The gavanometer constant of a moving coil galvanometer is given by

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

Galvanometer is a device used for the detection of

When the charged particle is projected at right angles to the field, then experienced by it will be:

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

Magnetic flux and flux density are related by

The SI unit of magnetic induction is

Which one of the following relations is correct?

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

A voltmeter is used to measure the

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

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NmA^-1is commonly called:

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