ICS Part 2 Physics Chapter 13 Short Questions Preparation

12th Class Physics
Short Questions Preparation

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Chapter 12
Chapter 13
Chapter 14
Chapter 15
Chapter 16
Chapter 17
Chapter 18
Chapter 19
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Online Short Questions For Chapter 2 "ICS Part 2 Physics Chapter 13 Short Questions Preparation "

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Physics - ICS Part 2 Physics Chapter 13 Short Questions Preparation

Question # 1

What is meant by tolerance?

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

Question # 2

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 # 3

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 # 4

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 # 5

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 # 6

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 # 7

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 # 8

Does the bends in wire effect its electrical resistance?

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

Question # 9

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 # 10

Name any four source of current.

Ans 1: Source of current are
1. Cells
2. Electric generators
3. Thermocouples
4. Solar cells

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

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Set 2

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

Question # 1

What is meant by tolerance?

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

Question # 2

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 # 3

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 # 4

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 # 5

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 # 6

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 # 7

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 # 8

Does the bends in wire effect its electrical resistance?

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

Question # 9

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 # 10

Name any four source of current.

Ans 1: Source of current are
1. Cells
2. Electric generators
3. Thermocouples
4. Solar cells

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

Question # 1

Write about any two sources of Current.

Ans 1:
1. Electric generators convert mechanical energy into the electrical energy.
2. Solar cells convert sunlight directly into electrical energy.
3. Thermocouples convert heat energy into electrical energy.

Question # 2

What is meant by Tolerance? Also give one example.

Ans 1: Tolerance mean the possible variation in the value of resistance of a carbon resistors from a marked value.In case of silver and gold ban its value is +-10% and +-5% .

Question # 3

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 # 4

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 # 5

Does the bends in wire effect its electrical resistance?

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

Question # 6

What are non ohmic devices?Give two examples.

Ans 1: Those devices which don't obey the Ohm's law are called non-ohmic devices.Their current-voltage graphic is not a straight line.For example ,filament bulb and semiconductor diodes.

Question # 7

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 # 8

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 # 9

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 # 10

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.

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

Question # 1

What is meant by tolerance?

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

Question # 2

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 # 3

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 # 4

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 # 5

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 # 6

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 # 7

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 # 8

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 # 9

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 # 10

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.

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ICS Part 2 Physics Chapter 13 Short Questions Preparation

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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 meant by tolerance?

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

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

Define temperature coefficient of resistivity.

What is short circuit and open circuit mean to you?

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

What is meant by tolerance of resistors?

Does the bends in wire effect its electrical resistance?

Define resistivity and electrolysis.

Name any four source of 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 meant by tolerance?

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

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

Define temperature coefficient of resistivity.

What is short circuit and open circuit mean to you?

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

What is meant by tolerance of resistors?

Does the bends in wire effect its electrical resistance?

Define resistivity and electrolysis.

Name any four source of current.

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

Write about any two sources of Current.

What is meant by Tolerance? Also give one example.

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

What is the negative coefficient of temperature?

Does the bends in wire effect its electrical resistance?

What are non ohmic devices?Give two examples.

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

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

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

What is wheat stone bridge?

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

What is meant by tolerance?

Define temperature coefficient of resistivity.

Define Electromotive force and Terminal potential difference.

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

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?

What is wheat stone bridge?

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

Differentiate between conventional and non-conventional current.

State Ohm's law and basic principle of electroplating.

ICS Part 2 Physics Chapter 13 Short Questions Preparation

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12th Class Physics
Short Questions Preparation