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

Question # 1

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

+e(v x B) A
-C(V x B) B
+e²(v x B) C
-e(v²x B) D

Question # 2

Magnetic lines of force:

Cannot intersect at all
A
Intersect at infinity
B
Intersect within magnet
C
Intersect at Neutral Point
D
None of these E

Question # 3

The force acting on a charge moving in a magnetic field

is perpendicular to the both magnetic field and direction of motion A
is proportional to the magnetic of charges B
vanishes when the motion is directly opposite to the direction of field C
all of the above D

Question # 4

The SI unit of flux density is.

Tesla A
Weber B
Gaun C
Weber/meter D

Question # 5

magnetic field is a:

Vector quantity
A
Scalar quantity
B
Scalar as well as scalar quantity
C
Any of (A) or (B)
D
Neither (A) nor (B) E

Question # 6

In the expression of force experienced by electron, the direction of both v and B are

parallel A
zero B
perpendicular C
none of them D

Question # 7

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 # 8

A voltmeter is used to measure the

potential difference A
current B
temperature C
resistance D

Question # 9

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 # 10

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

G 10^-3T A
G = 10^-2T B
G = 10^-4T C
G = 10^-1T D

Question # 11

The field around a moving charge is called

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

Question # 12

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 # 13

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

ampere A
volts B
milliampere C
ohm D

Question # 14

Tesla is the unit of

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

Question # 15

Amperean path is a:

Closed path
A
Rectangular path
B
Circular path
C
Any of above
D
Broken path
E

Question # 16

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

parallel to the field A
Perpendicular to the field B
At an angle of 45 to the field C
None of the above D

Question # 17

In a moving coil galvanometer, the deflecting couple depends upon

area of the coil A
number of turns of coil B
value of magnetic field C
all of the above D

Question # 18

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

perpendicular A
may be paralled or pendicular B
series C
none of these D

Question # 19

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 # 20

The current sensitivity of the galvanometer is

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

Question # 21

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

velocity A
graph plotting B
time-velocity C
none of these D

Question # 22

The magnetic field in the middle of a solenoid due to current is

weak A
strong and uniform B
none-uniform C
zero D

Question # 23

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 # 24

Resistance is measured in

volts A
ampere B
ohm C
watt D

Question # 25

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 # 26

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 # 27

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 # 28

A resistance used in voltmeter is called

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

Question # 29

The voltage increases linearly with

time A
velocity B
acceleration C
torque D

Question # 30

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

right hand rule A
left hand rule B
head to tall rule C
none of these D

Sr.#	Question	Answer
1	Magnetic induction is also called as:	A. Ampere’s law B. Faraday’s law C. Lenz’s law D. Newton’s law
2	A long wire wound tightly on a cylindrical core is called:	A. Potentiometer B. Solenoid C. Toroid D. Wheat and stone bridge
3	A voltmeter is used to measure the	A. potential difference B. current C. temperature D. resistance
4	In a straight current carrying conductor, the direction of magnetic field can be found by	A. right hand rule B. left hand rule C. head to tall rule D. none of these
5	The torque per unit twist of coil is called	A. proportionality constant B. gravitational constant C. boltzman constant D. coupling constant
6	Ammeter is used to measure	A. voltage B. resistance C. voltage and current D. current
7	The sources of magnetic field are	A. isolated magnetic poles B. charges at rest C. charges in motion D. none of these
8	The angle of deflection of coil can be measured by the	A. one method B. three method C. two method D. none of these
9	The working of galvanometer depends upon torque exerted on a current carrying coil in	A. magnetic field B. electric field C. gravitational field D. nuclear field
10	When charged particle is projected perpendicular to a uniform magnetic field its trajectory is	A. circular B. elliptical C. cycloid D. straight line

Latest Educational News Stories

Pakistan's Largest Database of Colleges and Universities

BS Programs

University Past Papers

University Results

Exam Results 2024

Study Abroad Programs and Opportunities for Pakistani Students

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