ICS Part 2 Physics Chapter 12 Short Questions Preparation

12th Class Physics
Short Questions Preparation

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Chapter 12
Chapter 13
Chapter 14
Chapter 15
Chapter 16
Chapter 17
Chapter 18
Chapter 19
Chapter 20
Chapter 21

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 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 # 2

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 # 3

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 # 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 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 # 6

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

Ans 1: For the identification of positively charged plate of a capacitor golf leaf electroscope is used,For this purpose the plate of capacitor is brought near the positively charged disc of electroscope.If the divergence of the gold leaves increase then the capacitor will be positively charged and vice versa.

Question # 7

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 # 8

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 # 9

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

Ans 1: Gold leaf electroscope is used,To check the polarity,disc of positively charged electroscope is brought close to the capacitor plate.If the divergence of gold leaves increases;the plate is positively charged and vice versa.

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

Set 1

10 Questions
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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 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 # 2

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 # 3

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 # 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 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 # 6

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

Ans 1: For the identification of positively charged plate of a capacitor golf leaf electroscope is used,For this purpose the plate of capacitor is brought near the positively charged disc of electroscope.If the divergence of the gold leaves increase then the capacitor will be positively charged and vice versa.

Question # 7

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 # 8

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 # 9

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

Ans 1: Gold leaf electroscope is used,To check the polarity,disc of positively charged electroscope is brought close to the capacitor plate.If the divergence of gold leaves increases;the plate is positively charged and vice versa.

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

Question # 1

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 # 2

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 # 3

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 # 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

Do electrons tend to go region of high potential or low potential?

Ans 1: Electrons tend to go to a region of high potential from low potential because electrons are negatively charged.

Question # 6

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 # 7

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 # 8

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 # 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

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.

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

Question # 1

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 # 2

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 # 3

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 # 4

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 # 5

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 # 6

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 # 7

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 # 8

Define electric intensity and give its unit.

Ans 1: The electrostatic force per unit test charge,at a specific point in the electric field is called electric field intensity.Its unit is NC^-1.

Question # 9

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 # 10

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.

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ICS Part 2 Physics Chapter 12 Short Questions Preparation

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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 capacitor?Define the capacitance.

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

Give the statement of Gauss's law.

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

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

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

Define electrostatics and electric force,

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

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

What is meant by EEG and ERG?

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 capacitor?Define the capacitance.

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

Give the statement of Gauss's law.

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

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

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

Define electrostatics and electric force,

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

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

What is meant by EEG and ERG?

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

Write two properties of electric field.

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

What is Potential Gradient?

Define xerography and photoconductor.

Do electrons tend to go region of high potential or low potential?

What is photoconductor?

Distinguished between electric field and field intensity.

What is capacitor?Define the capacitance.

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?

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

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

What is time constant?

What is Potential Gradient?

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

Define Time constant for RC Circuit.

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

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

What is capacitor?Define the capacitance.

Define electric intensity and give its unit.

Write down two difference between electric and gravitational force.

Define electric polarization and electric dipole.

ICS Part 2 Physics Chapter 12 Short Questions Preparation

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