ICS Part 2 Physics Chapter 13 Short Questions Preparation

Question # 1

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

Ans 1: During their motion free electrons collide frequently with the atoms of metal,on each collision they transfer some of their kinetic energy to the atime with which they collide.And these collisions produce heating effect in the wire.

Question # 2

What is meant by tolerance?

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

Question # 3

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

Ans 1: No current pass through the galvanometer when wheat stone bridge is balanced.Because at this stage ,both the terminals of the galvanometer are at the same potential.Hence no current will flow through it.

Question # 4

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 # 5

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 # 6

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 # 7

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.

Question # 8

State Ohm's law and basic principle of electroplating.

Ans 1: Current passing through a wire is directly proportional to the potential difference applied across its ends provided that the physical state conductors remains same.
Basic principle of electroplating is a process of coating a thin layer of sum expensive metal of (gold,silver etc) on a article of some cheap metal.

Question # 9

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

Ans 1: When a voltmeter is connected across a cell,it will draw some current from the cell and small potential drop takes place due current flowing through the internal resistance of the cell.As a result the actual emf of the cell decrease and the voltmeter cannot read exact value.

Question # 10

Differentiate between resistance and resistivity.Give their unit.

Ans 1: Resistance: The opposition against the flow of current is known as resistance,The SI unit of resistance is Ohm.
R=V/I
Ans 2: Resistivity:The resistance of a meter cube of a material is called resistivity.Its unit is known as ohm-meter.

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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

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

What is meant by tolerance?

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

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

Define resistivity and electrolysis.

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

What is short circuit and open circuit mean to you?

State Ohm's law and basic principle of electroplating.

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

Differentiate between resistance and resistivity.Give their unit.

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

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

What is meant by tolerance?

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

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

Define resistivity and electrolysis.

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

What is short circuit and open circuit mean to you?

State Ohm's law and basic principle of electroplating.

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

Differentiate between resistance and resistivity.Give their unit.

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

Differentiate between resistance and resistivity.Give their unit.

What is thermistor? Gives its two applications.

What is meant by tolerance?

Does the bends in wire effect its electrical resistance?

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

Define resistivity and electrolysis.

What is meant by tolerance of resistors?

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

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?

What is wheat stone bridge?

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

Define Electromotive force and Terminal potential difference.

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

Name any four source of current.

Define temperature coefficient of resistivity.

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

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

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?

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

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

What is short circuit and open circuit mean to you?

ICS Part 2 Physics Chapter 13 Short Questions Preparation

12th Class Physics
Short Questions Preparation