ICS Part 2 Physics Chapter 12 Short Questions Preparation

Question # 1

What is electric potential energy and electric potential difference?

Ans 1: Electric potential energy: The energy is acquired by unit positive charge in carrying it from one point to the other against the electric field keeping it in electrostatic equilibrium is called as electric potential energy,It is the energy stored in the charge 'q' because of its position in an electric field.It is measured in joules.
Ans 2: Electrical potential difference: The electric potential difference between two points is defined as the work done in carrying a unit a positive charge from one point to other point while keeping the charge in electrostatic equilibrium.

Question # 2

Define electric polarization and electric dipole.

Ans 1: When dielectric is placed between the plants of capacitor,positive and negative charge of its molecules displace from their position.Positive charges are attracted towards negative plates and negative charges towards positive plate,dipoles are formed.This process is called polarization.
Two equal and opposite charges separated by a small distance is called dipole.

Question # 3

Define Time constant for RC Circuit.

Ans 1: The time required by the capacitor to deposit 0.63 times the equilibrium charge q is called time constant.The product of R and C has the dimensions of time.So this product is known as time constant.
t=RC

Question # 4

Define electric potential and give its SI units.

Ans 1: The electric potential at any point in an electric field is equal to work done in bringing a unit positive charge from infinity to that point keeping it in equilibrium.Its SI unit is Volt (V).

Question # 5

State coulomb's law.

Ans 1: It states that the force of attraction or repulsion between two point charges is directly proportional to the product of the magnitudes of charge and inversely proportional to the square of the distance between them.

Question # 6

Electric lines of force never cross why?

Ans 1: Electric lines of force never cross each other,This is because that electric field line has only one direction at any given point.If the lines cross ,electric field lines could have more than one direction which is not possible.

Question # 7

Write down two difference between electric and gravitational force.

Ans 1: Differences:Electrical force is might be attractive as well as repulsive while the gravitational force is only attractive.Electrostatics force is medium dependent while the gravitational force is not.

Question # 8

Is E is necessary zero inside a charged rubber balloon if balloon is spherical?

Ans 1: Yes, E is necessarily zero inside a charged rubber balloon if balloon is spherical.

Question # 9

Why do the electrons tend to go to region of high potential?

Ans 1: We know that the electrons are negatively charged particles.So,when they are put inside an electric field they tend to go the region of high potential from the region of low potential.

Question # 10

Define xerography and photoconductor.

Ans 1: Xerograph is a photocopying process,It is taken from the Greek word "xeros" and "graphos" when mean dry writing.
Photoconductor is an insulator in the dark and becomes a conductor when exposed to light.

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ICS Part 2 Physics Chapter 12 Short Questions Preparation

12th Class PhysicsShort Questions Preparation

12th Class Physics Chapter Wise Preparation

Online Short Questions For Chapter 1 "ICS Part 2 Physics Chapter 12 Short Questions Preparation "

Physics - ICS Part 2 Physics Chapter 12 Short Questions Preparation

What is electric potential energy and electric potential difference?

Define electric polarization and electric dipole.

Define Time constant for RC Circuit.

Define electric potential and give its SI units.

State coulomb's law.

Electric lines of force never cross why?

Write down two difference between electric and gravitational force.

Is E is necessary zero inside a charged rubber balloon if balloon is spherical?

Why do the electrons tend to go to region of high potential?

Define xerography and photoconductor.

Prepare Complete Set Wise Questions For Chapter 1 "ICS Part 2 Physics Chapter 12 Short Questions Preparation "

Set 1

Set 2

Set 3

ICS Part 2 Physics Chapter 12 Short Questions Preparation - Set 1

What is electric potential energy and electric potential difference?

Define electric polarization and electric dipole.

Define Time constant for RC Circuit.

Define electric potential and give its SI units.

State coulomb's law.

Electric lines of force never cross why?

Write down two difference between electric and gravitational force.

Is E is necessary zero inside a charged rubber balloon if balloon is spherical?

Why do the electrons tend to go to region of high potential?

Define xerography and photoconductor.

ICS Part 2 Physics Chapter 12 Short Questions Preparation - Set 2

Write two properties of electric field.

Write down two difference between electric and gravitational force.

Define electric polarization and electric dipole.

How can you identify that which plate of a capacitor is positively charged?

Is it true that Gauss's law states that the total number of lines of forces crossing any closed surface in the outwards direction is proportional to the net positive charged enclosed within surface?

State coulomb's law.

What is strength of electric field inside a hollow charged sphere and why?

Is E is necessary zero inside a charged rubber balloon if balloon is spherical?

How sharks looks their prey?

Define electric flux.Write its SI units.

ICS Part 2 Physics Chapter 12 Short Questions Preparation - Set 3

What is Potential Gradient?

Write down two difference between electric and gravitational force.

Describe the force or forces on a positive point charge when placed between parallel plate,with similar and equal charges.

Distinguished between electric field and field intensity.

If a point charge q of mass is released in a non-uniform electric field with field lines pointing in the same directions,will it make rectilinear motion?

Is it true that Gauss's law states that the total number of lines of forces crossing any closed surface in the outwards direction is proportional to the net positive charged enclosed within surface?

What is time constant?

Is E is necessary zero inside a charged rubber balloon if balloon is spherical?

State coulomb's law.

Define electric polarization and electric dipole.

ICS Part 2 Physics Chapter 12 Short Questions Preparation

12th Class Physics
Short Questions Preparation