GRADE 12 - PHYSICS CHAPTER NO.3 ELECTROMAGNETISM Test No.2 Online MCQs MDCAT, UHS, PMC & ECAT Preparation

GRADE 12 – PHYSICS CHAPTER NO.3 ELECTROMAGNETISM Test No.2 Online MCQs MDCAT, UHS, PMC & ECAT Preparation

PHYSICS – 2nd Year
Chapter Name : ELECTROMAGNETISM
Chapter No. 3 / 14 [ Test No.2 ]
Multiple Choice Questions
Note : All MCQ’s selected in this test are from OLD F.Sc. board , UHS and PMC(Pakistan Medical Commission) Islamabad Papers.

Book Name : PHYSICS
Chapter No. 3 / 14 (Test No. 2)
Chapter Name : ELECTROMAGNETISM
Total MCQ from Text Book : 95
Book Version : 2020
Published By : Punjab Text Book Board Lahore
Approved By : Govt of the Punjab and Federal Ministry for Education
Test Type : MCQ’s
Exam conduct By : Inter Boards of Sindh, KPK, Balochistan, AJK, Gilgit Baltistan, Punjab & Federal
Class / Grade : 12 ( F.Sc. Intermediate)
Total Marks : 95
Total Time : 47 minutes 30 Seconds

GRADE 12 - PHYSICS CHAPTER NO.3 ELECTROMAGNETISM Test No. 2

Please wait while the activity loads.
If this activity does not load, try refreshing your browser. Also, this page requires javascript. Please visit using a browser with javascript enabled.

If loading fails, click here to try again

GRADE 12 - PHYSICS CHAPTER NO.3 ELECTROMAGNETISM Test No. 2

Start

Congratulations - you have completed GRADE 12 - PHYSICS CHAPTER NO.3 ELECTROMAGNETISM Test No. 2. You scored %%SCORE%% out of %%TOTAL%%. Your performance has been rated as %%RATING%%

Your answers are highlighted below.

Question 1

Galvanometer can be converted into voltmeter by connecting a high resistance in:

A	Parallel with galvanometer
B	Series with galvanometer
C	None of these
D	Parallel as well as series with the galvanometer

Question 2

A charged particle enters at 30^° to the magnetic field Its path becomes

A	Straight line
B	Elliptical
C	Circular
D	Helical

Question 3

A voltmeter is an electrical instrument which is used to measure

A	Resistance
B	Current
C	Potential difference
D	All of these

Question 4

A charged particle enters in a strong magnetic field its k.E.

A	Increases then Decreses
B	Remain constant
C	Increases
D	Decreases

Question 5

A current carrying loop is placed in a uniform magnetic field. The torque acting on it, does not depend upon

A	Area of loop
B	Current of the loop
C	Shape of loop
D	Magnetic field

Question 6

Proton and a - particle moving with same velocity enter a magnetic field perpendicularly. Which of the following is the ratio of radius of proton to a - particle

A	2
B	4
C	2-Jan
D	1

Question 7

A horizontal wire of 10cm and mass 0.3gm carries a current of 5A. Which of the following is the magnitude of the magnetic field that can support the weight of wire?

A	3 x 10^-4T
B	6 x 10^-4T
C	6 x 10^-3T
D	3 x 10^-3T

Question 8

To convert a-galvanometer into an ammeter, of range I ampere the shunt resistance is given by

A	R_s = (I_gR_g)/(I+I_g)
B	R_s = (I- I_g)/(I_gR_g)
C	R_s = (I- I_g)/(I_gR_g)
D	R_s = (I_gR_g)/(I-I_g)

Question 9

A voltmeter is always connected in

A	Series
B	Parallel
C	Perpendicular
D	Straight line

Question 10

An electron enters the magnetic field at right angle from left B is into paper. The electron will be deflected

A	Towards left
B	Downwards
C	Upward
D	Towards right

Question 11

The sensitivity of a galvanometer can be, increased by

A	Decreasing the number of turns of coil
B	Decreasing the area of the coil
C	Increasing the magnetic field
D	Using a fine suspension

Question 12

DMM stands for

A	None of these
B	Digital millimeter
C	Digital multimeter
D	Digit measuring Meter

Question 13

In a current carrying long solenoid the magnetic filed produced does not depend upon

A	Number of turns per unit length
B	Current flowing through solenoid
C	All of the above three
D	The radius of solenoid

Question 14

Force on a charged particle is zero when projected at angle with the magnetic field

A	270°
B	90°
C	180°
D	0°

Question 15

In order to measure potential difference voltmeter is always connected in

A	Both A and B
B	Neither is series nor in parallel
C	Series
D	Parallel

Question 16

The brightness of the spot on CRO screen is controlled by

A	Grid
B	Plates
C	Cathode
D	Anode

Question 17

The magnetic force is

A	Deflecting force
B	Lorentz force
C	Restoring force
D	Electric force

Question 18

Lorentz force is given by

A	q[E^?×(V^?+B^?)]
B	q(E^?+V^? x B^?)
C	q(V^?+E^? x B^?)
D	q(E^?-V^? x B^?)

Question 19

A charged particle moves along a circle under the action of possible electric and magnetic fields. Which of the following is possible

A	E≠0 B≠0
B	E = 0 B = 0
C	E = 0, B≠
D	E≠0 B = 0

Question 20

The SI unit of electric flux is:

A	NC m^-2
B	N mC²
C	N mC^-2
D	Nm^-2C^-2

Question 21

The brightness of spot in CRO is controlled by

A	Deflecting plates
B	Cathode
C	Grid
D	Anode

Question 22

If a high resistance is connected in series with the galvanometer the resulting instrument is called

A	A voltmeter
B	An ammeter
C	A potentiometer
D	An AVO meter

Question 23

The magnetic flux B is equal to

A	BA sinΘ
B	B/A
C	B^? x A^?
D	B^?.A^?

Question 24

The SI unit of magnetic induction is

A	Newton
B	Gauss
C	Weber
D	Tesla

Question 25

Brightness of screen of CRO controlled by

A	Grid
B	Filament
C	Cathode
D	Anode

Question 26

Two parallel wire carrying current in the same direction attract each other because of

A	Magnetic force between them
B	Mutual inductance between them
C	Potential difference between them
D	Electric force between them

Question 27

An electron and a proton enter a magnetic field with same velocity. Which of the following is the ratio of the acceleration

A	m_p / m_e
B	(√m_e / m_p
C	√m_p / m_e
D	m_e / m_p

Question 28

The sensitivity of galvanometer is given by

A	C/BAN
B	CAN/B
C	BAN/C
D	BN/CA

Question 29

A proper combination of a galvanometer and a series of resistance acts as

A	Digital Multimeter
B	Voltmeter
C	Ammeter
D	Ohmmeter

Question 30

When an electron is entered in a magnetic field, The magnitude of velocity of electron

A	Increases
B	Is independent of field strength
C	Depend on field strength
D	Decrease

Question 31

1 tesla is equal to

A	1Nm^-7 A^-7
B	1NmA^-1
C	1Nm^-7
D	1Nm^-2A^-1

Question 32

Energy stored per unit volume inside a solenoid is called

A	Work
B	Electric flux
C	Volume Charge density
D	Energy density

Question 33

The radius of curvature of the path of charged particle in a uniform magnetic field is directly proportional the

A	Charge an particle
B	Intensity of magnetic field
C	Energy of particle
D	Momentum of particle

Question 34

One Tesla is equal to

A	NAm^-1
B	N^-1Am^-1
C	NA^-1m
D	N Am

Question 35

If a charge is at rest in a magnetic field then force on charge is

A	q(V^? x B^?
B	q VB cosΘ
C	q VB sinΘ
D	Zero

Question 36

Two parallel wires carrying current in the same direction:

A	No effect on each other
B	Repel each other
C	Attract each other
D	Cancel their fields

Question 37

Two parallel straight wires carrying current in same direction will

A	May repel or attract
B	Repel each other
C	Attract each other
D	No effect

Question 38

A device which can measure current, potential difference and resistance is called

A	Ohmmeter
B	Volt meter
C	Ammeter
D	AVO meter

Question 39

In order to increase the range of an ammeter, the shunt resistance is

A	Decreased
B	Sometimes is increased and sometimes decreased
C	Kept constant
D	Increased

Question 40

The relation between current I and angle of deflection ? in a moving coil galvanometer is

A	I∝Θ
B	I∝(I/Θ)
C	I∝cosΘ
D	I∝sinΘ

Question 41

The unit of magnetic flux is

A	Weber m^-2
B	Weber
C	Tesla
D	Tesla²

Question 42

An electron is moving in -a circle of radius r in a uniform magnetic field B. Suddenly the field is reduced to The radius of circle now becomes

A	2r
B	r/4
C	r/2
D	4r

Question 43

AVOmeter basically consists of

A	Moving coil galvanometer
B	Voltmeter
C	Ohmmeter
D	Ammeter

Question 44

The sensitivity of galvanometer is given by

A	BN/CA
B	C/BAN
C	CAN/B
D	BAN/C

Question 45

Torque is produced in a current carrying coil when it is placed in a

A	Electric field
B	Gravitational field
C	Magnetic field
D	Nuclear field

Question 46

The brightness of spot in CRO is controlled by

A	Anode
B	Cathode
C	Deflecting Plates
D	Grid

Question 47

The magnetic force is simply a

A	Restoring force
B	Deflecting force
C	Gravitational force
D	Reflecting force

Question 48

A strong magnetic field is applied to a stationary electron then

A	Electron remain stationary
B	Electron move opposite to the field
C	Electron start spinning
D	Electron move in the direction of field

Question 49

The effective way to increase the sensitivity of moving coil galvanometer is

A	Increase the magnetic field
B	Increase the number of Turns
C	Increase the area of Coil
D	Increase the value of constant

Question 50

The brightness of the spot on CRO screen is controlled by

A	Deflecting Plates
B	Grid
C	Anode
D	Cathode

Question 51

The charges moving perpendicular to magnetic field experience force

A	Maximum
B	Infinite
C	Minimum
D	Zero

Question 52

A magnet drops down a long vertical copper tube. As it falls down the tube its velocity

A	Remain constant
B	None of above
C	Decrease
D	Increase

Question 53

If 0.5 T filled over an area of 2(m²) which lies at an angle of 60^° with field. Then the resulting flux will he

A	0.50 T
B	0.50 web
C	0.25 Wb
D	0.25T

Question 54

Which of the following in motion can not be deflected by magnetic field?

A	Electron
B	Sodium ion
C	Proton
D	Neutron

Question 55

The value of e/m is smallest for

A	Proton
B	B-particals
C	Positrons
D	Electron

Question 56

The number of electrons on CRO is controlled by

A	Y deflecting plates
B	Grid
C	Filament
D	X deflecting plates

Question 57

An avometer can also be called as

A	Digital voltmeter
B	Digital multimeter
C	Digital ammeter
D	Digital ohm-meter

Question 58

The sum of electric and magnetic force is called

A	Newton's force
B	Maxwell force
C	Centripetal force
D	Lorentz force

Question 59

Useful device to measure resistance current and voltage is an electronic instrument called

A	Digital Multimeter
B	Voltmeter
C	Ammeter
D	Ohmmeter

Question 60

Total Flux through a closed surface depends on

A	Charge enclosed only
B	Charge and Medium
C	Medium Only
D	Shape of Surface

Question 61

A charged particle moves through a magnetic field in a direction perpendicular to it. Which of the following remain unchanged for the partical

A	Acceleration
B	Speed
C	Direction
D	Velocity

Question 62

The resistance of ideal voltmeter is

A	Very low
B	Zero
C	Infinite
D	Very high

Question 63

Magnetic effect of current was discovered by

A	Oersted
B	Joule
C	Kirchhoff
D	Faraday

Question 64

In order to increase sensitivity galvanometer the value of C may by

A	Decrease
B	Neither increase nor decrease
C	Remains same
D	Increase

Question 65

1 Tesla =

A	1 N^-1Am^-1
B	N^-1Am
C	1N^-1Am^-2
D	1NA^-1m^-1

Question 66

A uniform magnetic field is represented by a set of lines of force which are

A	None of these
B	Convergent
C	Parallel
D	Divergent

Question 67

One Tesla is equal to

A	N^-1Am
B	NA^-1m^-1
C	NA^-1m
D	ANm^-1

Question 68

A current flows in a conductor from east to west. The direction of the magnetic field at a point above the conductor is towards

A	West
B	North
C	South
D	East

Question 69

In case of conversion of galvanometer into ammeter the shunt resistance is connected

A	In parallel
B	In series
C	Neither parallel nor series
D	In parallel and In series

Question 70

The S.I unit of magnetic flux is given by

A	Nm^-1 A
B	Nm^-7 A^-7
C	NmA^-1
D	Nm² A^-1

Question 71

A voltmeter is always connected in circuit in

A	Series
B	Both a and b
C	None of these
D	Parallel

Question 72

Torque on a current carrying coil is given by

A	τ = NIABcosα
B	τ = NIABsinα
C	τ = NWABsinα
D	τ = NWABcosα

Question 73

The e/m of a neutron is

A	Less than electron
B	Greater than electron
C	The same as electron
D	Zero

Question 74

The resistance of an ideal ammeter

A	High
B	Infinite
C	Zero
D	Small

Question 75

If a high resistance is connected in series to a galvanometer, then galvanometer is converted into

A	Voltmeter
B	Multimeter
C	Ohmmeter
D	Ammeter

Question 76

Shunted galvanometer is called

A	Potentiometer
B	Ohm meter
C	Ammeter
D	Voltmeter

Question 77

A magnetic needle is kept in a non-uniform magnetic field it experience

A	Neither a force nor a torque
B	Force but not torque
C	Torque but not force
D	A force and a torque

Question 78

The sensitivity of galvanometer is given by

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

Question 79

When a charge is projected perpendicular to a uniform magnetic field, its path is

A	Ellipse
B	Circular
C	Helix
D	Spiral

Question 80

The unit of Magnetic Flux

A	Nm^-1A
B	Nm^-1A^-1
C	NmA^-1
D	NmA

Question 81

The CRO is used for

A	Displaying the wave form of given vibration
B	Displaying the wave form of frequency
C	Converting A.C into D.C
D	Displaying wave form of given voltage

Question 82

In order to increase the range of voltmeter, the series resistance is

A	Decreased
B	Kept constant
C	Increased
D	Sometimes increased and sometimes decreased

Question 83

Emf is induced due to change in

A	Current
B	Magnetic flux
C	Charge
D	Electric field

Question 84

The galvanometer can be made sensitive by making the factor BAN/C

A	Constnt
B	Large
C	Small
D	Zero

Question 85

Voltmeter of range IV has a resistance of 1000?. To extend the range to 10V the additional series required is

A	11000Ω
B	1000Ω
C	9000Ω
D	10000Ω

Question 86

The value of permeability of free space µ₀ is given by

A	4 x 10^-7 Wb Am
B	4 x 10⁷ Wb A^-1m^-1
C	4 x 10^-9 Wb A^-1m^-1
D	4 x 10^-7 Wb A^-1m^-1

Question 87

A 2Mev proton is moving perpendicular to a uniform magnetic field of 2.5T. Which of the following is the magnetic force on proton?

A	8 x10^-11N
B	2.5 x 10^-11N
C	2.5 x 10^-10N
D	8 x 10^-12N

Question 88

Which is the correct relation

A	IT = 10^-2G
B	IT = 10^-4G
C	IT = 10²G
D	IT = 10⁴G

Question 89

The brightness of spot on CRO screen is controlled by

A	Grid
B	Plates
C	Anode
D	Cathode

Question 90

If a long hollow copper pipe carries a direct current The magnetic field due to current will be

A	Neither inside nor outside the pipe
B	Both inside and outside the pipe
C	Only outside the pipe
D	Only inside the pipe

Question 91

The high resistance Rh to convert a galvanometer into a voltmeter is Rh=

A	(V/I_g)+(R_g)
B	(I_g)/(I-I_g)
C	(R_gg)
D	(V/I_g)-(R_g)

Question 92

A charged particle is moving in uniform magnetic field in a circle. The radius of circular path is R. If q nervy of particle is doubled then the new radius will be

A	2R
B	R/√2
C	R/2
D	√2R

Question 93

A power line lies along east-west direction and carries a current of 10A. Which of the following is the force Per meter due to earth's magnetic-field of 10^-4 tesla?

A	10 ² N
B	10 ³N
C	10 ⁵N
D	10 ⁴N

Question 94

The ray which remain undeflected in a magnetic field is

A	Cathode rays
B	αrays
C	γRays
D	βRays

Question 95

If the number of turns become double but length remain same, then magnetic field in the solenoid become:

A	Remain same
B	Half
C	Double
D	Zero

Once you are finished, click the button below. Any items you have not completed will be marked incorrect. Get Results

There are 95 questions to complete.

←

List

→

Return

Shaded items are complete.

1	2	3	4	5
6	7	8	9	10
11	12	13	14	15
16	17	18	19	20
21	22	23	24	25
26	27	28	29	30
31	32	33	34	35
36	37	38	39	40
41	42	43	44	45
46	47	48	49	50
51	52	53	54	55
56	57	58	59	60
61	62	63	64	65
66	67	68	69	70
71	72	73	74	75
76	77	78	79	80
81	82	83	84	85
86	87	88	89	90
91	92	93	94	95
End