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

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 # 2

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 # 3

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 # 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

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 # 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

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.

Question # 8

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 # 9

Center of planetary system is oppositely charged to the rest of planets.How orbits of planets would be modified?

Ans 1: It would add or subtract the gravitational force if the charge was ;large enough and the sun was charged.So the radius of the orbits would be changed

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

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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

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 # 2

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 # 3

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 # 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

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 # 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

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.

Question # 8

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 # 9

Center of planetary system is oppositely charged to the rest of planets.How orbits of planets would be modified?

Ans 1: It would add or subtract the gravitational force if the charge was ;large enough and the sun was charged.So the radius of the orbits would be changed

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 2

Question # 1

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 # 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 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 # 4

Define electric flux.Write its SI units.

Ans 1: The number of the field lines passing through a certain element of area is known as electric flux through that area.Its SI units is Nm²C^-1.

Question # 5

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 # 6

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 # 7

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 # 8

Center of planetary system is oppositely charged to the rest of planets.How orbits of planets would be modified?

Ans 1: It would add or subtract the gravitational force if the charge was ;large enough and the sun was charged.So the radius of the orbits would be changed

Question # 9

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 # 10

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.

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12th Class Physics Chapter 1 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

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 # 3

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 # 4

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 # 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

Center of planetary system is oppositely charged to the rest of planets.How orbits of planets would be modified?

Ans 1: It would add or subtract the gravitational force if the charge was ;large enough and the sun was charged.So the radius of the orbits would be changed

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

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

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.

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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12th Chapter

12th Class Physics Ch 12 Preparation

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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

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

Define electric potential and give its SI units.

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

Define xerography and photoconductor.

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

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

What is meant by EEG and ERG?

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

Center of planetary system is oppositely charged to the rest of planets.How orbits of planets would be modified?

Define electron volt.

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

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

Define electric potential and give its SI units.

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

Define xerography and photoconductor.

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

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

What is meant by EEG and ERG?

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

Center of planetary system is oppositely charged to the rest of planets.How orbits of planets would be modified?

Define electron volt.

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

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

Give the statement of Gauss's law.

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

Define electric flux.Write its SI units.

What is time constant?

Define xerography and photoconductor.

Define electric intensity and give its unit.

Center of planetary system is oppositely charged to the rest of planets.How orbits of planets would be modified?

Define electrostatics and electric force,

Write down two difference between electric and gravitational force.

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

What is photoconductor?

State coulomb's law.

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

What is time constant?

How sharks looks their prey?

Center of planetary system is oppositely charged to the rest of planets.How orbits of planets would be modified?

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

Define electric intensity and give its unit.

What is meant by EEG and ERG?

Define electric polarization and electric dipole.

12th Class Physics Ch 12 Preparation

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