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

Question # 1

In the formula B= µ̻ nl, the symbol n denotes:

Total number of turns of solenoid
A
Number of turns per unit length
B
Number of turns per unit volume
C
Numbers of turns per unit area
D
Number of moles
E

Question # 2

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 # 3

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 # 4

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

Maximum A
Minimum B
Zero C
Very small D
None of these E

Question # 5

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

avometer A
millimeter B
voltmeter C
none of these D

Question # 6

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

BACosѲ
A
Zero B
BA C
BA sinѲ D
None of these E

Question # 7

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

F = B² A
F = 0 B
F = B C
F = B/2 D

Question # 8

The SI unit of magnetic flux is.

weber A
Nm^-1A^-1 B
tesla C
gauss D

Question # 9

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 # 10

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 # 11

The SI unit of flux density is

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

Question # 12

The torque per unit twist of coil is called

proportionality constant A
gravitational constant B
boltzman constant C
coupling constant D

Question # 13

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 # 14

The current sensitivity of the galvanometer is

C/BAN A
BAN/C B
CAN/B C
CBN/A 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

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 # 17

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 # 18

The SI unit of magnetic flux is

NmA^-2 A
NmA^-1 B
NAm^-1 C
Nm²A^-1 D

Question # 19

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 # 20

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 # 21

Avo-meter is used of measure the

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

Question # 22

The vector representation of force experience give the direction of

magnetic field A
current B
length of conductor C
force D

Question # 23

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

F =q(v/B) A
F=q²(v x B) B
F=q(v x B) C
F= vx B D

Question # 24

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 # 25

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 # 26

A voltmeter is used to measure the

potential difference A
current B
temperature C
resistance D

Question # 27

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 # 28

Ammeter is used to measure

voltage A
resistance B
voltage and current C
current D

Question # 29

A solenoid is a coil of wire which is:

Short, loosely wound, cylindrical
A
Long, tightly wound, spherical
B
Long, loosely wound, cylindrical
C
Long, tightly wound, cylindrical
D
None of these
E

Question # 30

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

Sr.#	Question	Answer
1	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
2	When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into	A. Voltmeter B. Avometer C. Ammeter D. None of these
3	The field around a moving charge is called	A. magnetic field B. conservative field C. non-conservative field D. none of these
4	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
5	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)
6	How many number of anodes used in electron gun	A. one B. two C. three D. six
7	A beam of electrons is provided by an	A. electron gun B. Suppray C. Injection D. None of these
8	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
9	A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is	A. minimum B. maximum C. zero D. none of these
10	In the region surrounding a current carrying wire:	A. A magnetic field is setup B. The lines of force are elliptical C. Direction of lines of forces depends upon direction of current D. Both (A) and (C)

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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