ICS Part 2 Physics Chapter 13 Short Questions Preparation

Question # 1

Briefly describe the current through a metallic conductor and drift velocity.

Ans 1: In a metallic conductor,free electron are in random motion with the speed of several hundred km/s at the room temperature.If the ends of the wire are connected to the battery the free electrons are experience a force and directed to move in the electric field direction.The accelerating electrons keep on colliding with atoms of the conductors and transfer their energy to the lattice with the result that the electrons acquire an average velocity called drift velocity.The drift velocity is of the order of 10^-3.A steady current is establish in the wire.

Question # 2

Does the bends in wire effect its electrical resistance?

Ans 1: No bend in wire do not affect its electrical resistance.

Question # 3

What is ohmic and non ohmic devices with example.

Ans 1: The devices which obey Ohm's law are called ohmic devices and devices which do not obey Ohm's law are called non-ohmic law.For example copper,silver and gold are ohmic whereas diodes and tungsten filaments are non ohmic.

Question # 4

What are the difficulties in testing weather the filament of lighted bulb obeys ohm's law?

Ans 1: In case of light bulb,the temperature of the filament increase with the passage of current through it.Hence the Ohms law can't be applied to filament bulb.

Question # 5

Differentiate between conventional and non-conventional current.

Ans 1: Conventional Current: The current flow die to positive charges from a point at higher potential to a point at lower potential is called conventional current.
Ans 2: Non-Conventional Current: The amount of electric charge that flow through a cross section of a conductor per unit time is known as electric current.It is also known as non-conventional current.

Question # 6

Define temperature coefficient of resistivity.

Ans 1: The temperature of coefficient of resistivity is defined as fractional change in resistivity per kelvin rise in temperature.Its unit is K^-1.

Question # 7

What is meant by tolerance?

Ans 1: Tolerance means the possible variation from the marked value.

Question # 8

How can rheostat be used as potential divider?

Ans 1: By adjusting the sliding contact resistance of the rheostat can be altered which in turn would regulate the potential offered by the cell E to the main circuit,And thus a rheostat can be used as potential divider.

Question # 9

What is the conventional current? How does it differs from electric current?

Ans 1: The current flow due to positive charges from a point at higher potential to a point at lower potential is called conventional current.It is due to positive charges while electric current is due to negative charges i.e electrons.

Question # 10

What is short circuit and open circuit mean to you?

Ans 1: when switched is close and current is passing through the circuit,It is called closed circuit and in this situation resistance is zero whereas the circuit is said to be open if it has infinite resistance and no current is passing through it.

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ICS Part 2 Physics Chapter 13 Short Questions Preparation

12th Class PhysicsShort Questions Preparation

12th Class Physics Chapter Wise Preparation

Online Short Questions For Chapter 2 "ICS Part 2 Physics Chapter 13 Short Questions Preparation "

Physics - ICS Part 2 Physics Chapter 13 Short Questions Preparation

Briefly describe the current through a metallic conductor and drift velocity.

Does the bends in wire effect its electrical resistance?

What is ohmic and non ohmic devices with example.

What are the difficulties in testing weather the filament of lighted bulb obeys ohm's law?

Differentiate between conventional and non-conventional current.

Define temperature coefficient of resistivity.

What is meant by tolerance?

How can rheostat be used as potential divider?

What is the conventional current? How does it differs from electric current?

What is short circuit and open circuit mean to you?

Prepare Complete Set Wise Questions For Chapter 2 "ICS Part 2 Physics Chapter 13 Short Questions Preparation "

Set 1

Set 2

Set 3

ICS Part 2 Physics Chapter 13 Short Questions Preparation - Set 1

Briefly describe the current through a metallic conductor and drift velocity.

Does the bends in wire effect its electrical resistance?

What is ohmic and non ohmic devices with example.

What are the difficulties in testing weather the filament of lighted bulb obeys ohm's law?

Differentiate between conventional and non-conventional current.

Define temperature coefficient of resistivity.

What is meant by tolerance?

How can rheostat be used as potential divider?

What is the conventional current? How does it differs from electric current?

What is short circuit and open circuit mean to you?

ICS Part 2 Physics Chapter 13 Short Questions Preparation - Set 2

Differentiate between conventional and non-conventional current.

What are the difficulties in testing weather the filament of lighted bulb obeys ohm's law?

Write about any two sources of Current.

What is the conventional current? How does it differs from electric current?

Give two substance having negative temperature coefficient.Also define the temperature coefficient.

What does the equation H=I2Rt show?

Name any four source of current.

How a wheatstone bridge is used to determine an unknown resistance?

Why does no current pass through Galvanometer in a balanced wheat stone bridge although the keys in the circuit are closed ?

What is wheat stone bridge?

ICS Part 2 Physics Chapter 13 Short Questions Preparation - Set 3

Why does the resistance of a conductor rise with a temperature?

What are non ohmic devices?Give two examples.

Differentiate between resistance and resistivity.Give their unit.

Do two long and parallel current carrying wires attract each other?

Give two substance having negative temperature coefficient.Also define the temperature coefficient.

What is meant by Tolerance? Also give one example.

A voltmeter can not read the exact EMF of the cell.Why?

Name any four source of current.

Write about any two sources of Current.

Why does no current pass through Galvanometer in a balanced wheat stone bridge although the keys in the circuit are closed ?

ICS Part 2 Physics Chapter 13 Short Questions Preparation

12th Class Physics
Short Questions Preparation

What does the equation H=I²Rt show?