ICS Part 2 Physics Chapter 13 Short Questions Preparation

Question # 1

What is wheat stone bridge?

Ans 1: It is an electrical circuit which can be used to find the unknown resistance of a wire.It consists of four resistance connected in the form of mesh.galvanometer,battery and switch.

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

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 # 4

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 # 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

Define Electromotive force and Terminal potential difference.

Ans 1: Electromotive force:The energy supplied to a unit charge in moving it from negative to positive electrode inside the source is called electromotive force.
Ans 2: Terminal potential difference:The potential difference across the terminal of a cell or battery when current is being drawn from it is called terminal potential difference.The potential difference across the conductor is zero when no current flows through it.

Question # 7

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 # 8

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

Ans 1: Wheatstone bridge is an especially designed electrically circuit used to calculate the accurate value of any unknown resistance.It consists of four resistance,a galvanometer, a battery and a switch connected.When the switch is closed current pas through the galvanometer and then the three known resistance R₁,R₂and R₃are adjusted in such a way that galvanometer show no deflection,In this balanced condition the fourth unknown resistance R₄can be calculated by using this relation.R₁/R₂=R₃/R₄.

Question # 9

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

Ans 1: By an increase in potential difference,drift velocity also increase.Because by increasing potential difference ,the current also increase .

Question # 10

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.

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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 wheat stone bridge?

Define resistivity and electrolysis.

What is meant by tolerance of resistors?

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?

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

Define Electromotive force and Terminal potential difference.

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

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 the conventional current? How does it differs from electric 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 wheat stone bridge?

Define resistivity and electrolysis.

What is meant by tolerance of resistors?

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?

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

Define Electromotive force and Terminal potential difference.

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

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

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

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

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

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

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

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

Name some effects of current.

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

Differentiate between resistance and resistivity.Give their unit.

State Ohm's law and write its formula.

Define temperature coefficient of resistivity.

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

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

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

What are non ohmic devices?Give two examples.

Why potential meter is accurate measuring meter?

Differentiate between resistance and resistivity.Give their unit.

Define temperature coefficient of resistivity.

What is meant by tolerance?

Name any four source of current.

Differentiate between conventional and non-conventional current.

State Ohm's law and write its formula.

ICS Part 2 Physics Chapter 13 Short Questions Preparation

12th Class Physics
Short Questions Preparation