☺☺50 POINTS☺☺
Here's a question for all Physics Newton!
• Give me notes of chapter "Electricity" of class 10th (CBSE).
Answers
Answer:-
ELECTRICITY.
☆ Electric Circuit = A Continuous and closed path of an Electric Current is Called an Electric Circuit.
When the Terminals of a Battery are Connected across the ends of a Conductor, Charges flow through it and Constitutes Electric Current.
☆ Electric Current = It can be define as the amount of Charges flowing through a Conductor per Unit Time.
In Other Words,
The Flowing Electric Charge in a Conductor is known as Electric Current.
☆ The S.I. unit of Electric Charge is Coulomb ( C).
☆ There are two types of Charges. They are:-
● Positive Charge = The Charge carried in a proton is positive and is equal to 1.6 × 10^(-19).
● Negative Charge = The Charge Carried by an Electron is Negative and is equal to -1.6 × 10^(-19).
☆ Potential Difference = The Electric Potential Difference between two points is define as the work done to move a unit charge from one point to another.
☆ Electric Potential = It can be define as the work done in taking a unit Charge from any reference point to that Particular point.
☆ Ohm's Law = The Ohm's law states that, At the Constant Temperature, the potential Difference across the end of a given Conductor is directly proportional to the Current flowing through it.
☆ Resistance = The Resistance of a Conductor is defined as the Ratio of Potential Difference applied to the Conductor to the Current Flowing through it.
NOTE :- The Higher is the Resistance, the lower is the Current. If the Resistance is Doubled, the Current will be halved.
☆ Resistivity = The Resistivity of a Material is defined as the Resistance per unit length of the material of unit area of Cross Section.
☆☆ Combination of Resistor!!
=) A Conducting Wire of a Particular Resistance is called Resistor.
☆ Series Combination = In this, the Resistors are Connected end to end.
=) Equivalent Resistance = R1 + R2 + ........
☆ Parallel Combination = In this, One end of each Resistor is connected to one point and the other end is Connected to another point.
=) Equivalent Resistance = 1/R1 + 1/R2 + .......
☆ Heating Effect of Electric Current = When Current flows through the Resistor, the Heat is produced. This is known as Heating Effect of Electric Current.
☆ Electric Power = It is defined as the Rate of doing Electric work of Electric Energy.
Electricity
Electron :- It is basic elementary particle which are negatively charged.
Charge :- It is a measure as extra positive or negative that an object has.
SI unit :- Coulomb (C)
Conductor :- It is a substance that allow the charges flow though it.
Example - Metal
Insulator :- It is a substance that does not allow the charges flow through it.
Example - Wood, rubber
Resistor :- It is neither a conductor or an insulator. A material that resist charges to flow through it but does not completely is called as a Resistor.
Example - Nichrome (alloy ) & Tungsten (metal)
Cell :- An electric cell supply energy to move charges through a circuit or a wire.
Example - Voltaic cell & Daniel cell
Battery :- Combination of cell.
Electric current :- The amount of charge flowing through a particular area in unit time.
Symbol - I and SI unit - Ampere (A)
1 Ampere :- 1 Ampere of current is defined as when 1 C of charge flow in 1 second across any cross section of conductor.
Potential :- The difference in electric charge between two points in a wire or a circuit is called as Potential.
SI unit - Volt (V)
Potential Difference :- It is the amount of work done to move a unit charge from one point to another.
SI unit - Volt (V)
1 Volt :- 1 Volt is the potential difference between two point in a current carrying conductor when 1 J of work is done to move a charge of 1 C from one point to another.
Electric circuit :- It is a continuous and closed path for electron to flow.
Resistance :- It is a property of a conductor to resist the electron flow.
Symbol - R and SI unit - 'ohm' Ω
Ohm's law :- At constant temperature, the potential difference across a conductor is directly proportional to the current through it.
V = IR
Volt meter :- Device use to measure potential. They are always connected in parallel connection.
Ammeter :- Device use to measure current. They are always connected in series connection.
Law of Resistance in series :- State that when two or more resistance are connected in series the effective resistance will be the sum of individual of resistance.
Law of Parallel combination connection :- State that reciprocal of effective resistance in parallel combination is equal to the sum of reciprocal of individual resistance.
Power :- Rate of doing work. Symbol - P
Joules Law :- The energy produce by the current is directly proportional to the square of the current flowing through the conductor, the resistance of the conductor, time for which current flows.
SI unit - Joule (J)
Fuse :- It is a safety device. which work on the principle of heating effect of current.