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

What is meant by tolerance?

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

Question # 3

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 # 4

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 # 5

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 # 6

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 # 7

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 # 8

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 # 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

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

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?

What is meant by tolerance?

How can rheostat be used as potential divider?

What is short circuit and open circuit mean to you?

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

Define resistivity and electrolysis.

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?

Define temperature coefficient of resistivity.

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

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 the negative coefficient of temperature?

What is meant by tolerance?

How can rheostat be used as potential divider?

What is short circuit and open circuit mean to you?

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

Define resistivity and electrolysis.

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?

Define temperature coefficient of resistivity.

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

Name any four source of current.

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

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

Name some effects of current.

How can rheostat be used as potential divider?

What are non ohmic devices?Give two examples.

Define temperature coefficient of resistivity.

Name any four source of current.

Does the bends in wire effect its electrical resistance?

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?

Why potential meter is accurate measuring meter?

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

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

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

What is thermistor? Gives its two applications.

Does the bends in wire effect its electrical resistance?

Differentiate between conventional and non-conventional current.

What does the equation H=I2Rt show?

State Ohm's law and basic principle of electroplating.

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

Differentiate between resistance and resistivity.Give their unit.

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

ICS Part 2 Physics Chapter 13 Short Questions Preparation

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12th Class Physics
Short Questions Preparation

What does the equation H=I²Rt show?