ICS Part 2 Physics Chapter 13 Short Questions Preparation

Question # 1

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 # 2

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 # 3

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 # 4

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 # 5

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 # 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

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 # 8

What is meant by tolerance?

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

Question # 9

Name any four source of current.

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

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

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? Also give one example.

State Ohm's law and write its formula.

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?

Differentiate between conventional and non-conventional current.

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

What is meant by tolerance of resistors?

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

What is meant by tolerance?

Name any four source of current.

State Ohm's law and basic principle of electroplating.

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? Also give one example.

State Ohm's law and write its formula.

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?

Differentiate between conventional and non-conventional current.

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

What is meant by tolerance of resistors?

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

What is meant by tolerance?

Name any four source of current.

State Ohm's law and basic principle of electroplating.

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

Write about any two sources of Current.

What does the equation H=I2Rt show?

What is meant by Tolerance? Also give one example.

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

Does the bends in wire effect its electrical resistance?

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

What is meant by tolerance?

What is meant by tolerance of resistors?

State Ohm's law and basic principle of electroplating.

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

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

Why potential meter is accurate measuring meter?

What is meant by tolerance of resistors?

Differentiate between resistance and resistivity.Give their unit.

State Ohm's law and basic principle of electroplating.

What is wheat stone bridge?

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

What is short circuit and open circuit mean to you?

Differentiate between conventional and non-conventional current.

What is ohmic and non ohmic devices with example.

Define resistivity and electrolysis.

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?