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Free download in PDF Coulombs Law Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like IIT-JEE, NEET, AIIMS etc. These short solved questions or quizzes are provided by Gkseries.
(1)
Two charges 1C and -4C exists in air. What is the direction of force?
[A]
Away from 1C
[B]
Away from -4C
[C]
From 1C to -4C
[D]
From -4C to 1C
(2)
Find the force between two charges when they are brought in contact and separated by 4cm apart, charges are 2nC and -1nC, in μN.
[A]
1.44
[B]
2.44
[C]
1.404
[D]
2.404
(3)
The Coulomb law is an implication of which law?
[A]
Ampere law
[B]
Gauss law
[C]
Biot Savart law
[D]
Lenz law
(4)
For a charge Q1, the effect of charge Q2 on Q1 will be,
[A]
F1 = F2
[B]
F1 = -F2
[C]
F1 = F2 = 0
[D]
F1 and F2 are not equal
(5)
Which Of The Following Is A Vector Quantity
[A]
Electrical Potential
[B]
Electrical Field Intensity
[C]
Electric Charge
[D]
All Of The Above
Answer: Electrical Field Intensity
(6)
Two capacitor of each breakdown voltage 500 V are connected parallel. The breakdown rating of the combination will be
[A]
500 V
[B]
500√2 V
[C]
1000 V
[D]
2500 V
(7)
A charge which when placed in vacuum from an equal and similar charge repels with a force of 9000 N, is known as
[A]
coulomb
[B]
milli coulomb
[C]
micro coulomb
[D]
None of the above
(8)
Electric lines of force about a negative point charge are
[A]
circular, anticlockwise
[B]
circular, clockwise
[C]
radial, inward
[D]
radial, outward
(9)
Two charges are placed at a certain distance apart. A brass sheet is placed between them. The force between them will
[A]
Increase
[B]
Decrease
[C]
Remains Unchanged
[D]
All the above
(10)
A point charge in space is attracted towards a dielectric material because of the
[A]
Phenomenon Of Dielectric Polarization
[B]
Maximization Of Electrostatics Flux
[C]
Dielectric Hysteresis
[D]
None Of The Above
Answer: Maximization Of Electrostatics Flux
(11)
A region around a stationary electric charge has
[A]
Magnetic Field
[B]
Electric Field
[C]
Both Electric And Magnetic Field
[D]
Neither Electric Nor Magnetic Field
(12)
The force of attraction or repulsion between two charges q1 and q2 at a distance d meters apart is proportional to the product of charges q1 and q2 and is inversely proportional to the distance square between the two charges. Above statement is attributed as:
[A]
Lenz’s law
[B]
Faraday law
[C]
Coulomb’s law
[D]
Maxwell’s law
(13)
A positive and a negative charge are initially 4 cm apart. When they are moved closer together so that they are now only 1 cm apart, the force between them will be
[A]
16 times larger than before
[B]
8 times larger than before
[C]
4 times larger than before
[D]
4 times smaller than before
Answer: 16 times larger than before
(14)
Two charged spheres of radii 10 cm and 15 cm are connected by a thin wire. No current will flow if they have
[A]
The Same Charge
[B]
The Same Energy
[C]
The Same Field On Their Surface
[D]
The Same Potential
Answer: The Same Potential
(15)
The relative permittivity of most materials lies between
[A]
20 and 100
[B]
10 and 20
[C]
100 and 200
[D]
1 and 10
(16)
If the relative permittivity of the medium increases, the electric intensity at a point due to a given charge
[A]
Decreases
[B]
Increases
[C]
Remains The Same
[D]
All of the above
(17)
When the potential difference across the electric field intensity between the parallel plate air capacitor is doubled, plates
[A]
Is Not Change
[B]
Is Halved
[C]
Is Doubled
[D]
Is Independent Of The Potential Difference
Answer: Is Independent Of The Potential Difference
(18)
One farad is the same as
[A]
one coulomb/volt
[B]
one joule/volt
[C]
one joule/coulomb
[D]
one coulomb/joule
(19)
Electric potential is a
[A]
scalar quantity
[B]
vector quantity
[C]
dimensionless quantity
[D]
none of the above
(20)
The potential at a point due to a charge is 9 V. If the distance is increased three times, the potential at that point will be
[A]
27 V
[B]
3 V
[C]
12 V
[D]
18 V
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