ICS Part 2 Physics Chapter 13 Short Questions Preparation

Question # 1

What is the negative coefficient of temperature?

Ans 1: If the resistance of a substance decrease with an increase in temperature ,then it is termed as negative coefficient of temperature,For example ,silicon and germanium have negative coefficient of temperature.

Question # 2

Define resistivity and electrolysis.

Ans 1: The resistance of a meter cube of a material is called resistivity.Certain liquids such dilute sulphuric acid or copper sulphate solution conduct electricity due to some chemical reactions that take place within them.The study of this process is known as electrolysis.

Question # 3

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

Ans 1: The temperature coefficient of a resistance is defined as fractional change in resistance per kelvin rise in temperature.Its unit is K^-1.Substance like Ge and Si have negative temperature coefficient.

Question # 4

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 # 5

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

Ans 1: Yes ,If the direction of current is same in two long parallel current carrying wires.Because the opposite pole of electromagnet comes in front of each other and attracts.

Question # 6

What is meant by tolerance of resistors?

Ans 1: Tolerance is the measure of possible variation from the marked value,A gold band has +-5% tolerance ,silver has +-10% and no band at all wounf mean a +-20 tolerance.

Question # 7

What is thermistor? Gives its two applications.

Ans 1: Thermistors are heat sensitive resistors.Thermistors with positive temperature coefficient of resistance as well as negative temperature coefficient of resistance are available.They are used for accurate measuring of temperature up to 10K.They are used as temperature sensors.

Question # 8

A potential difference is applied across the ends of a copper wire,What is the effect on the drift velocity of free electrons by decreasing the length and temperature of the wire?

Ans 1: By decreasing the length and temperature of wire the value of resistance in the wire also decrease which cause an increase in the value of current,Hence the drift velocity of free electrons also increase.

Question # 9

State Ohm's law and write its formula.

Ans 1: It states that "the current flowing through a conductor is directly proportional to the applied potential difference provided that the physical state remains same"
V=IR
Resistance: The opposition against the flow of current is known as resistance.The SI unit of resistance is Ohm
R=V/I

Question # 10

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.

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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

What is the negative coefficient of temperature?

Define resistivity and electrolysis.

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

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

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

What is meant by tolerance of resistors?

What is thermistor? Gives its two applications.

A potential difference is applied across the ends of a copper wire,What is the effect on the drift velocity of free electrons by decreasing the length and temperature of the wire?

State Ohm's law and write its formula.

Differentiate between conventional and non-conventional current.

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

What is the negative coefficient of temperature?

Define resistivity and electrolysis.

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

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

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

What is meant by tolerance of resistors?

What is thermistor? Gives its two applications.

A potential difference is applied across the ends of a copper wire,What is the effect on the drift velocity of free electrons by decreasing the length and temperature of the wire?

State Ohm's law and write its formula.

Differentiate between conventional and non-conventional current.

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

Define Electromotive force and Terminal potential difference.

Differentiate between resistance and resistivity.Give their unit.

How the heating effects produce when current flows through the conductor?

Name any four source of current.

What is meant by tolerance of resistors?

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

What is the negative coefficient of temperature?

Why potential meter is accurate measuring meter?

Differentiate between conventional and non-conventional current.

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

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

Define Electromotive force and Terminal potential difference.

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

What is the effect on drift velocity of free electrons by increasing potential difference?

What is meant by Tolerance? Also give one example.

What are non ohmic devices?Give two examples.

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

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

Define temperature coefficient of resistivity.

Differentiate between resistance and resistivity.Give their unit.

What is ohmic and non ohmic devices with example.

ICS Part 2 Physics Chapter 13 Short Questions Preparation

12th Class Physics
Short Questions Preparation