ICS Part 2 Physics Chapter 12 Short Questions Preparation

Question # 1

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 # 2

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 # 3

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 # 4

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 # 5

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 # 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

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 # 8

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 # 9

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 # 10

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).

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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

Define Time constant for RC Circuit.

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

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

Write down two difference between electric and gravitational force.

What is meant by EEG and ERG?

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

Electric lines of force never cross why?

Define electric polarization and electric dipole.

Give the statement of Gauss's law.

Define electric potential and give its SI units.

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

Define Time constant for RC Circuit.

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

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

Write down two difference between electric and gravitational force.

What is meant by EEG and ERG?

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

Electric lines of force never cross why?

Define electric polarization and electric dipole.

Give the statement of Gauss's law.

Define electric potential and give its SI units.

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

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

Define electric flux.Write its SI units.

Define Time constant for RC Circuit.

Define electrostatics and electric force,

What is photoconductor?

Define electron volt.

Give the statement of Gauss's law.

What is Potential Gradient?

Define electric intensity and give its unit.

Define electric potential and give its SI units.

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

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

What is capacitor?Define the capacitance.

How sharks looks their prey?

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

Define electrostatics and electric force,

Define electric potential and give its SI units.

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

Define electric flux.Write its SI units.

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?

Give the statement of Gauss's law.

ICS Part 2 Physics Chapter 12 Short Questions Preparation

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