Fsc part 2 online preparation for physics chapter 12 (electrostatics)

Online Short Questions For Chapter 1 "12th Class Physics Chapter 1 Short Questions Preparation "

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Physics - 12th Class Physics Chapter 1 Short Questions Preparation

Question # 1

What is Potential Gradient?

Ans 1: The quantity gives the maximum value of rate of change of electric potential in magnitude and direction with respect to distance,It is known as potential gradient.

Question # 2

Give the statement of Gauss's law.

Ans 1: It states that the total electric flux through any closed surface is equal to 1/e_otimes the total charged encloses in it.

Question # 3

What is the effect of medium between the charges upon coulomb's force?

Ans 1: .If an insulating material i.e direction is places between the charges ,it will reduce the electrostatic force as compared to free space by factor called relative permittivity.

Question # 4

Describe the force on positive charge when placed between parallel plates with opposite and equal charges.

Ans 1: When a positive point charge is placed between parallel plates with opposite but equal amount of charge ,then electric field intensity due to one plate is equal in magnitude but in same direction of the electric field intensity due to the other plate.So the value of resultant electric field intensity is non-zero.Hence the point charge will be accelerated towards negative plate.

Question # 5

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 # 6

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 # 7

Suggest a method 'shield' an apparatus from electric field even when it is to be kept in the region where electric field is present.

Ans 1: An apparatus will be shielded from electric field when it is kept inside the metallic box,so that the charge will only reside on the outer surface of the container.It is in accordance with Gauss law.

Question # 8

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.

Question # 9

What is photoconductor?

Ans 1: A material which behaves as an insulator when it is in dark and becomes conductor when it is exposed to light is known as photoconductor.

Question # 10

What is capacitor?Define the capacitance.

Ans 1: Capacitor is a device used to store charge,
Capacitance is a measure of ability of capacitor to store charge.

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Prepare Complete Set Wise Questions For Chapter 1 "12th Class Physics Chapter 1 Short Questions Preparation "

Set 1

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Set 2

10 Questions
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Set 3

10 Questions
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12th Class Physics Chapter 1 Short Questions Preparation - Set 1

Question # 1

What is Potential Gradient?

Ans 1: The quantity gives the maximum value of rate of change of electric potential in magnitude and direction with respect to distance,It is known as potential gradient.

Question # 2

Give the statement of Gauss's law.

Ans 1: It states that the total electric flux through any closed surface is equal to 1/e_otimes the total charged encloses in it.

Question # 3

What is the effect of medium between the charges upon coulomb's force?

Ans 1: .If an insulating material i.e direction is places between the charges ,it will reduce the electrostatic force as compared to free space by factor called relative permittivity.

Question # 4

Describe the force on positive charge when placed between parallel plates with opposite and equal charges.

Ans 1: When a positive point charge is placed between parallel plates with opposite but equal amount of charge ,then electric field intensity due to one plate is equal in magnitude but in same direction of the electric field intensity due to the other plate.So the value of resultant electric field intensity is non-zero.Hence the point charge will be accelerated towards negative plate.

Question # 5

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 # 6

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 # 7

Suggest a method 'shield' an apparatus from electric field even when it is to be kept in the region where electric field is present.

Ans 1: An apparatus will be shielded from electric field when it is kept inside the metallic box,so that the charge will only reside on the outer surface of the container.It is in accordance with Gauss law.

Question # 8

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.

Question # 9

What is photoconductor?

Ans 1: A material which behaves as an insulator when it is in dark and becomes conductor when it is exposed to light is known as photoconductor.

Question # 10

What is capacitor?Define the capacitance.

Ans 1: Capacitor is a device used to store charge,
Capacitance is a measure of ability of capacitor to store charge.

Submit

12th Class Physics Chapter 1 Short Questions Preparation - Set 2

Question # 1

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 # 2

Does the total flux depend upon the shape or geometry of the closed surface?

Ans 1: No,the total flux does not depend upon the shape or geometry of the closed surface,It depends upon medium and charge enclosed.

Question # 3

Distinguished between electric field and field intensity.

Ans 1: Electric Field: The space or region around the charge in which it exerts its electric force on other charges is called electric field.
Ans 2: Electric field intensity: At any point in electric field the force experienced by a point charge q is termed as electric or strength at that point.

Question # 4

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 # 5

What is capacitor?Define the capacitance.

Ans 1: Capacitor is a device used to store charge,
Capacitance is a measure of ability of capacitor to store charge.

Question # 6

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 # 7

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

Ans 1: When a positive point charge is placed between parallel plates with similar and equal charges,then the electric field intensity due to one plate is equal in magnitude but opposite in direction of electric intensity due to other plate.So the value of resultant electric field intensity E is zero,Hence the net force on the positive charge is zero,Thus is will remain at rest.

Question # 8

A point charge move rectilinear path in an electric field.Explain.

Ans 1: If a point charge q of mass m is placed at any point in the field in the point,it will follow straight or rectilinear path along the field line due to repulsive force.

Question # 9

What is photoconductor?

Ans 1: A material which behaves as an insulator when it is in dark and becomes conductor when it is exposed to light is known as photoconductor.

Question # 10

Define electron volt.

Ans 1: It is defined as The amount of energy acquired or lost by an electron when it is displaced across two points having potential difference of one volt.It is measure on electrons volts.

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12th Class Physics Chapter 1 Short Questions Preparation - Set 3

Question # 1

What is Potential Gradient?

Ans 1: The quantity gives the maximum value of rate of change of electric potential in magnitude and direction with respect to distance,It is known as potential gradient.

Question # 2

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?

Ans 1: Yes the above statement is true,The total number of lines of force crossing any close surface in the outwards directions means electric flux.

Question # 3

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 # 4

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.

Question # 5

Define electron volt.

Ans 1: It is defined as The amount of energy acquired or lost by an electron when it is displaced across two points having potential difference of one volt.It is measure on electrons volts.

Question # 6

Does the total flux depend upon the shape or geometry of the closed surface?

Ans 1: No,the total flux does not depend upon the shape or geometry of the closed surface,It depends upon medium and charge enclosed.

Question # 7

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 # 8

How sharks looks their prey?

Ans 1: Sharks have special organs,called the ampullae of Lorenzini that are very sensitive to electric field and can detect potential difference of the order of nano volt and can locate their prey very precisely.

Question # 9

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 # 10

What is capacitor?Define the capacitance.

Ans 1: Capacitor is a device used to store charge,
Capacitance is a measure of ability of capacitor to store charge.

Submit

Physics

12th Chapter

12th Class Physics Ch 12 Preparation

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Chapter 12

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Fsc part 2 online preparation for physics chapter 12

Online Short Questions For Chapter 1 "12th Class Physics Chapter 1 Short Questions Preparation "

Physics - 12th Class Physics Chapter 1 Short Questions Preparation

What is Potential Gradient?

Give the statement of Gauss's law.

What is the effect of medium between the charges upon coulomb's force?

Describe the force on positive charge when placed between parallel plates with opposite and equal charges.

Define Time constant for RC Circuit.

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

Suggest a method 'shield' an apparatus from electric field even when it is to be kept in the region where electric field is present.

Define xerography and photoconductor.

What is photoconductor?

What is capacitor?Define the capacitance.

Prepare Complete Set Wise Questions For Chapter 1 "12th Class Physics Chapter 1 Short Questions Preparation "

Set 1

Set 2

Set 3

12th Class Physics Chapter 1 Short Questions Preparation - Set 1

What is Potential Gradient?

Give the statement of Gauss's law.

What is the effect of medium between the charges upon coulomb's force?

Describe the force on positive charge when placed between parallel plates with opposite and equal charges.

Define Time constant for RC Circuit.

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

Suggest a method 'shield' an apparatus from electric field even when it is to be kept in the region where electric field is present.

Define xerography and photoconductor.

What is photoconductor?

What is capacitor?Define the capacitance.

12th Class Physics Chapter 1 Short Questions Preparation - Set 2

Write down two difference between electric and gravitational force.

Does the total flux depend upon the shape or geometry of the closed surface?

Distinguished between electric field and field intensity.

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

What is capacitor?Define the capacitance.

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

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

A point charge move rectilinear path in an electric field.Explain.

What is photoconductor?

Define electron volt.

12th Class Physics Chapter 1 Short Questions Preparation - Set 3

What is Potential Gradient?

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 electric potential energy and electric potential difference?

Define xerography and photoconductor.

Define electron volt.

Does the total flux depend upon the shape or geometry of the closed surface?

Define electric polarization and electric dipole.

How sharks looks their prey?

State coulomb's law.

What is capacitor?Define the capacitance.

12th Class Physics Ch 12 Preparation

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