Download revision notes for Electricity class 10 Notes and score high in exams. These are the Electricity class 10 Notes prepared by team of expert teachers. The revision notes help you revise the whole chapter in minutes. Revising notes in exam days is on of the best Electricity Class 10th Ncert Notes Online tips recommended by teachers during exam days. In the recent times,life would be impossible without electricity. From lighting our homes, charging our devices, electricity has become an integral part of our day-to-day live.
So it becomes necessary to understand the origin,characteristics and utilisation of electricity. In the boat excursion lake tahoe Ncert Notes For Class 10th Social Science List model chapter we will discuss :. Charge q.
Charge is a characteristic unit of matter by means of which matter experiences electric forces. It can be either negative electron or positive proton. Electric current can also be defined as the amount of charge flowing through a unit cross-section in per second.
Ampere Defined as one coulomb of charge flowing per second. In an electric circuit the electric current flow in an opposite direction to the flow of electron �ve charge. This current is called conventional current. Small quantity of current are expressed in.
Ammeter : It is an instrument used to measure the electric current in a circuit. It is always connected in series in a circuit. It has low resistance practically. It is represented as. Electric Circuit : It is a closed path along which the electric current flows. The electrons can only flow when there is difference of electric potential.
It is only possible when there is high pressure at one side and low at another side, then it will move electricity class 10th ncert notes list high pressure to low pressure. In case of electric current, the flow of charge is made possible due to chemical action with in a cell that generates the potential difference across theterminals of the cell. Electric potential Difference : It is defined as the work done in carrying a unit charge from one point to another in an electric circuit.
SI unit of potential difference � Volts. It is named after Alessandro Volta. One Volt When 1 Joule of work is done in carrying one coulomb 1C of charge from one point to another of boat excursion lake tahoe model current carrying conductor then the potential difference is said to be IV.
Voltmeter It is an instrument, used to measure the potential difference and represented by the symbol in an electric circuit. It is always connected in parallel across the points between which the potential difference is to be measured. It has high resistance. Circuit Diagram electricity class 10th ncert notes list circuit diagram electrical diagramelementary diagramelectronic schematic is a graphical representation of an electric circuit. George Simon Ohm f ound the relationship between the current I flowing through a conductorand potential difference V across the terminals of a conductor using the circuit diagram.
He observed that electricity class 10th ncert notes list potential difference and current varied linearly. The graph between V and I is always straight line with slope equal to R.
Resistance : It is the property of a conductor that opposes the flow of current. Its symbol is If a conductor has less Resistance, then more current will flow electricity class 10th ncert notes list it. On its length L 2. On its cross sectional area A 3. On the nature of material. Resistance R L Directly prop. Resistivity : The resistance offered by a wire of unit length and unit cross-sectional area is called resistivity.
Its SI unit is. Resistivity is the measure of resistance of a material. In other words, upto what extent will the material resist current flow. Resistivity of an alloy homogeneous mixture of metals is generallyhigher than of its constituent metals.
Alloys have high resistivity and do not oxidise burn readly at boat excursion lake tahoe model, for this reason they are commonly used in electrical heating devices,like electric iron, heater, toasters. The current I flowing electricity class 10th ncert notes list the resistance in series will remain same,where as the potential difference V across each resistor will be different.
Total potential difference. Thus, we conclude that effective Resistance of the several resistors joinedin series is equal to the algebraic sum of their individual resistances. Also, the net resistance Electricity Class 10th Ncert Notes Go increases when resistors are connected in series.
Let us take three resistors of resistance that are connectedin parallel in the electric circuit. Total current substitute the value of. Thus, we conclude that the reciprocal of total effective resistance of theseveral resistors connected in parallel is equal to the sum of the reciprocals of the individual resistances. Also ,the net resistance reduces when resistors are connected in parallel. In series connection if any of the component fail to work, the circuit will break and then none of the component ex.
TV, bulb, fan. It is not possible to connect a bulb and a heater in series, because they need different value of current to operate properly. Explanation Battery or a cell is a source of electrical energy. Battery or cell Chemical reaction in it will produce potential difference at its two terminals 2. Electron will come in motion to flow current through resistor 3. To maintain this current, the sources has to keep expending its energy.
Part of this energy is consumed in useful work Like rotating of fan 5. Rest of energy of source is converted into heat, that raises the temperature of gadget. This is known as heating effect of electric current. This effect is utilized in devices such as electric heater, iron. Let us suppose that current I is flowing through a resistor of resistance R for the time t. The potential difference across the resistance is V. Work done in moving the charge Q will be.
It is also used in bulb to produce light. Filament of bulb is made of strong metal with high melting point suchas tungsten. This filament can retain as much of the heat generated as possible, to become very hot and emit light. Fuse is electricity class 10th ncert notes list device, that protect the circuits and appliance by stopping theflow of high current.
The wire of fuse is made of an alloy of metalse. The alloy should be of lowmelting point and high resistivity, fuse is always connected in seriescircuit. When large current flows through the circuit, the temperatureof fuse wire will increase. This melts the fuse wire and breaks thecircuit. Electric Power : In case of electricity, it is defined as the rate of changeof electrical energy dissipated or consumed in an electric circuit.
Electricity class 10 Notes. CBSE quick revision note for Class 10 Science, Chemistry, Maths, Biology and other subject are very helpful to revise the whole syllabus during exam days. The revision notes covers all important formulas and concepts given in the chapter. Even if you wish to have an overview of a chapter, quick revision notes are here to do if for you.
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