Question # 1

The relative permittivity of air is

Choose an answer

1

3.7

7.8

1.0006

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

Choose an answer

Energy stored increase

Energy stored decrease

Capacitance decrease

All

If the magnitude of charge on each of two objects is doubled and the distance between them is also doubled then force between them:

Choose an answer

Doubled

Quadrupled

Halved

Remains same

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

Choose an answer

5F

0.02F

500F

0.2F

The coulomb’s law is valid for the charges which are:

Choose an answer

Moving and point charges

Stationary and point charges

Moving and non-point charges

Stationary and large size charges

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:

Choose an answer

Electric field between the plates

Charge on the plates

Potential difference across the plate

Energy stored in the capacitor

Two point charges +2 coulombs and +6 coulombs repel each other with a force of 12 N if a charge -4 coulomb is given to each of these charges the force will be:

Choose an answer

4N repulsive

8N repulsive

4N attractive

8N attractive

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

Choose an answer

2V

10V

5V

20V

The relative permittivity of air is

Choose an answer

1

3.7

7.8

1.0006

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:

Choose an answer

Twice the kinetic energy and four times the velocity

Four times the kinetic energy and twice the velocity

Four times the kinetic energy and sixteen times the velocity

Sixteen times the kinetic energy and four times the velocity

A soap bubble is give a negative charge, then its radius:

Choose an answer

Decrease

Remains same

Increases

Bubble will disappear

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

Choose an answer

Ampere’s law

Ohm’s law

Coulomb’s law

Faraday’s law65y7uhnb

Capacitor stores energy in the form of :

Choose an answer

Electric field

Both of these

Magnetic field

Gravitational field

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:

Choose an answer

F/8

F/4

F/16

4F

Capacitance of a capacitor does not depend upon

Choose an answer

Separation between plates

Thickness of the plates

Area of the plates

Medium between the plates

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 :

Choose an answer

The potential difference of the capacitor will become 18 volts

The P.D become 20 volts

The P.D will remain unchanged

The charge on condenser will reduce to one third

An electric field can deflect:

Choose an answer

X-rays

Neutrons

𝛼 −particles

𝛾 −rays

A charged conductor has charged on its:

Choose an answer

Outer surface

Surrounding surface

Inner surface

Middle point

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

Choose an answer

Both positive

Alike

Both Negative

Unlike

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

Choose an answer

6V

60V

6000V

600V

An electron is moving towards high potential. Its electrical P.E:

Choose an answer

Increases

Remains constant

Decrease

May increase may decrease

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:

Choose an answer

100

25000

100000

400000

A body gets positive charge. It means that:

Choose an answer

It has lost electrons

It has gained positions

It has gained protons

It has gained 𝛼 −particles

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

Choose an answer

Remain the same

Increase

Decrease

Decrease exponentially

Which one of the following statements regarding electrostatics is wrong?

Choose an answer

Charge is conserved

Charge is quantized

There is no field near an isolated charge at rest

A moving charge produces both electric and magnetic fields

Area under Q-V graph for a capacitor represents

Choose an answer

Charged stored

Energy stored

Electric field strength

Potential difference

More Classes

Other Links

MDCAT Physics Chapter 6 Electrostatics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer