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

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Physics - ICS Part 2 Physics Chapter 12 Short Questions Preparation

Question # 1

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

Ans 1: The strength of electric field inside a hollow charge is zero.inside a hollow charge sphere q=0.

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

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 # 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

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 # 6

Write two properties of electric field.

Ans 1: 1.Electric field line originate from positive charge and end om negative charges.
2.The tangent to a field line at any point gives the direction of the electric field intensity at the point.

Question # 7

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 # 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

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 # 10

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.

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

Question # 1

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

Ans 1: The strength of electric field inside a hollow charge is zero.inside a hollow charge sphere q=0.

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

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 # 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

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 # 6

Write two properties of electric field.

Ans 1: 1.Electric field line originate from positive charge and end om negative charges.
2.The tangent to a field line at any point gives the direction of the electric field intensity at the point.

Question # 7

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 # 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

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 # 10

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.

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

Question # 1

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 # 2

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 # 3

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 # 4

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 # 5

Define electrostatics and electric force,

Ans 1: Electrostatics: The branch of physics which deals with the study of stationary charges is called electrostatics.Electric force: The force which holds the negative and positive charges that make up atoms or molecule is called electric force.

Question # 6

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 # 7

What depend on the slow or fast charging and discharging of a capacitor?

Ans 1: How fast or how slow the capacitor is charging or discharging depends upon the products of the resistance and the capacitance called time constant.Capacitor is charged or discharged rapidly when RC is small.

Question # 8

Write two properties of electric field.

Ans 1: 1.Electric field line originate from positive charge and end om negative charges.
2.The tangent to a field line at any point gives the direction of the electric field intensity at the point.

Question # 9

What is time constant?

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

Question # 10

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?

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

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

Question # 1

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 # 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

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 # 4

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 # 5

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 # 6

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 # 7

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 # 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

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 # 10

What is meant by EEG and ERG?

Ans 1: Electroencephalography: is usually applied over human brain to check its abnormal behaviour by the use of electrical energy.For this electrodes are connected to the selected portion of the head and the corresponding response is seen graphically through the screen of a recording device.
Ans 2: Electrocardiography: records the voltage between points on human skin generated by the electrical process in the heart,It is made in running position providing information about hearts performance under stress.

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Online Short Questions Preparations

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

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?

Define electric polarization and electric dipole.

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

What is electric potential energy and electric potential difference?

Write two properties of electric field.

What is photoconductor?

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

Define electron volt.

What is Potential Gradient?

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

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?

Define electric polarization and electric dipole.

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

What is electric potential energy and electric potential difference?

Write two properties of electric field.

What is photoconductor?

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

Define electron volt.

What is Potential Gradient?

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

How sharks looks their prey?

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

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

What is photoconductor?

Define electrostatics and electric force,

Define electric polarization and electric dipole.

What depend on the slow or fast charging and discharging of a capacitor?

Write two properties of electric field.

What is time constant?

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?

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

What is photoconductor?

Give the statement of Gauss's law.

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

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

How sharks looks their prey?

Define electron volt.

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

Define xerography and photoconductor.

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 meant by EEG and ERG?

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