MDCAT Physics Chapter 9 online mcq test with answers for chapter 9 (Electromagnetic Induction)

Question # 1

The distance between the plates of a charged parallel plate capacitor is 4mm and potential difference is 6 volts. If the distance between the plates is increased to 12mm, then :

The potential difference of the capacitor will become 18 volts A
The P.D become 20 volts B
The P.D will remain unchanged C
The charge on condenser will reduce to one third D

Question # 2

Charge on a capacitor is 50C. if voltage applied across its plates is 10V then its capacitance:

5F A
0.02F B
500F C
0.2F D

Question # 3

A charged conductor has charged on its:

Outer surface A
Surrounding surface B
Inner surface C
Middle point D

Question # 4

A body gets positive charge. It means that:

It has lost electrons A
It has gained positions B
It has gained protons C
It has gained 𝛼 −particles D

Question # 5

If the distance between the plates of a parallel plates capacitor is increased, its potential will:

Remain the same A
Increase B
Decrease C
Decrease exponentially D

Question # 6

Between the plates of a parallel plate condenser there is 1mm thick paper of dielectric constant 4. Itis charged at 100 volt. The electric field in volt/meter between the plates of the capacitor is:

100 A
25000 B
100000 C
400000 D

Question # 7

The electron is a cathode-ray tube are accelerated from cathode to anode by a potential differenceof 2000 V. If this p.d is increased to 8000 V, the electrons will arrive at the anode with:

Twice the kinetic energy and four times the velocity A
Four times the kinetic energy and twice the velocity B
Four times the kinetic energy and sixteen times the velocity C
Sixteen times the kinetic energy and four times the velocity D

Question # 8

A parallel plate air capacitor is charged and then isolated. When a dielectric material is inserted between the plates of the capacitor , then which of the following does not change:

Electric field between the plates A
Charge on the plates B
Potential difference across the plate C
Energy stored in the capacitor D

Question # 9

Two charges of equal magnitudes and at a distance r exert a force F on each other. If the charges are halved and distance between them is doubled, then the new force acting on each charge is:

F/8 A
F/4 B
F/16 C
4F D

Question # 10

The potential difference between head and tail of an "electric eel" can be upto.

6V A
60V B
6000V C
600V D

Question # 11

When a dielectric is inserted between the plates of a capacitor, Which one is true

Energy stored increase A
Energy stored decrease B
Capacitance decrease C
All D

Question # 12

Which one of the following statements regarding electrostatics is wrong?

Charge is conserved A
Charge is quantized B
There is no field near an isolated charge at rest C
A moving charge produces both electric and magnetic fields D

Question # 13

Capacitance of a capacitor does not depend upon

Separation between plates A
Thickness of the plates B
Area of the plates C
Medium between the plates D

Question # 14

Capacitor stores energy in the form of :

Electric field A
Both of these B
Magnetic field C
Gravitational field D

Question # 15

Two point charges repel each other with a force of 4× 𝟏𝟎−𝟓 newton at a distanceof meter. Two charges are

Both positive A
Alike B
Both Negative C
Unlike D

Question # 16

A charge of 2C experiences a force 2000N in a uniform electric field. In this fieldthe potential difference between two points separated by a distance 1cm is

2V A
10V B
5V C
20V D

Question # 17

The law, governing the force between electric charges is known as:

Ampere’s law A
Ohm’s law B
Coulomb’s law C
Faraday’s law65y7uhnb D

Question # 18

The relative permittivity of air is

1 A
3.7 B
7.8 C
1.0006 D

Question # 19

Area under Q-V graph for a capacitor represents

Charged stored A
Energy stored B
Electric field strength C
Potential difference D

Question # 20

An electric field can deflect:

X-rays A
Neutrons B
𝛼 −particles C
𝛾 −rays D

Sr.#	Question	Answer
1	The distance between the plates of a charged parallel plate capacitor is 4mm and potential difference is 6 volts. If the distance between the plates is increased to 12mm, then :	A. The potential difference of the capacitor will become 18 volts B. The P.D become 20 volts C. The P.D will remain unchanged D. The charge on condenser will reduce to one third
2	A parallel plate air capacitor is charged and then isolated. When a dielectric material is inserted between the plates of the capacitor , then which of the following does not change:	A. Electric field between the plates B. Charge on the plates C. Potential difference across the plate D. Energy stored in the capacitor
3	Charge on a capacitor is 50C. if voltage applied across its plates is 10V then its capacitance:	A. 5F B. 0.02F C. 500F D. 0.2F
4	An electric field can deflect:	A. X-rays B. Neutrons C. 𝛼 −particles D. 𝛾 −rays
5	Two charges of equal magnitudes and at a distance r exert a force F on each other. If the charges are halved and distance between them is doubled, then the new force acting on each charge is:	A. F/8 B. F/4 C. F/16 D. 4F
6	A charge of 2C experiences a force 2000N in a uniform electric field. In this fieldthe potential difference between two points separated by a distance 1cm is	A. 2V B. 10V C. 5V D. 20V
7	The relative permittivity of air is	A. 1 B. 3.7 C. 7.8 D. 1.0006
8	If the distance between the plates of a parallel plates capacitor is increased, its potential will:	A. Remain the same B. Increase C. Decrease D. Decrease exponentially
9	The electron is a cathode-ray tube are accelerated from cathode to anode by a potential differenceof 2000 V. If this p.d is increased to 8000 V, the electrons will arrive at the anode with:	A. Twice the kinetic energy and four times the velocity B. Four times the kinetic energy and twice the velocity C. Four times the kinetic energy and sixteen times the velocity D. Sixteen times the kinetic energy and four times the velocity
10	A charged conductor has charged on its:	A. Outer surface B. Surrounding surface C. Inner surface D. Middle point

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

MDCAT Physics Chapter 9 MCQ Test With Answer for (Electrostatics )

MCQ's Test For MDCAT Physics Chapter 9 Electrostatics MCQ's Test

MDCAT Physics Chapter 9 Electrostatics MCQ's Test