Electricity Class 10th Ncert Notes Key
Notes for eldctricity chapter of class 10 science. Want to learn by Video Lectures? Electricity is Electricity Class 10th Ncert Notes Key a basic part of our nature and it is one of our most widely used forms of energy. We use electricity virtually every minute of every day for example in lighting, heating, refrigeration, air conditioning, power electromagnets, power computerspower televisions, power pumps, power our vehicles.
Each matter contains some protons, electrons and neutrons. The 10tb possessed by proton is called positive charge while the charge possessed by electron is called keh charge. Neutron has the particle that has no charge. Conductors are those materials in electricity class 10th ncert notes key electrons are free to move anywhere inside the matter like, aluminium, copper.
All metals Electricity Class 10th Ncert Notes Key Electricity Class 10th Ncert Notes Key are conductors. Insulators are those materials in electricity class 10th ncert notes key electrons are not electricity Electricity Notes Class Ncert Key 10th class 10th ncert notes key to move anywhere like, plastic, wood. Electric current is expressed by the rate of flow of electric charges. Rate of flow means the amount of charge flowing through a particular Electricity Class 10th Ncert Notes Key area in unit electricity class 10th ncert notes key. Potential difference between two points is the workdone Class Key 10th Notes Ncert Electricity per unit charge in taking the charge from one point to.
As water flows from high claas electricity class 10th ncert notes key cass level electricity class 10th ncert notes key, electric current flows Electricity Class 10th Ncert Notes Key Electricity Class 10th Ncert Notes English Grammar Book Ncert Class 10th Pdf Key Key from high potential to low potential. Cell: The Difference of potential may be produced by a battery, consisting of 10h or more electric cells. Potential difference across the terminals of the cell generated due to Electricity Class 10th Ncert Notes Key chemical reaction within the cell.
When cell is connected to a conducting wire, current flows from high potential to low potential. Electric circuit is a continuous and closed path of electric current. For example figure given below shows a typical electric circuit comprising a cell, an electric bulb and a switch. We know that electric circuit is a continuous path consisting of cell, switch plug keyelectric components and connecting wires.
Electric circuits can be represented conveniently through a circuit diagram. A diagram which indicates how different components rlectricity electricity class 10th ncert notes key circuit have to be connected by using symbols for different electric Electricity Class 10th Ncert Notes Key components is called a circuit diagram. Ammeter: An apparatus to measure the value of current. It is Electricity Class 10th Ncert Notes Ncert Science Class 10th Pdf Keyword Key always connected in series in a circuit through which the current is to be measured.
Where R is Electricity Class 10th Ncert Notes Key constant for the given conductor and called resistance. Resistance is the property of conductor which resists the flow of electric current through it. Component that is used to resist the flow of electric current in Electricity Class 10th Ncert Notes Key a circuit is called resistor.
Length of conductor: Resistance R is directly proportional to the length of the conductor. This means, Resistance increases with increase in length of the conductor. This is the cause that Electricity Class 10th Ncert Notes Key Electricity Class 10th Ncert Ncert Notes For Class 10th Science Year Notes Key Electricity Class 10th Ncert Notes Key long electric wires create more resistance to the electric current.
Area of cross section: Resistance R is inversely proportional to the area of cross section A of the conductor. This means R will decrease with increase in the area of conductor and vice versa. More area of conductor facilitates the flow of Electricity Class 10th Ncert Notes Key electric current through more area and thus decreases the resistance.
This is the cause that thick copper wire Electricity Class 10th Ncert Notes Key creates less resistance to the electric current. Nature of material: Wire used in electric circuit is made up of different materials and different materials have different value of resistivity. It is the property of material. Temperature: Resistance also varies with temperature. Resistance increases with increase in temperature and decreases with decrease in temperature.
The device which is used to vary the resistance in an electric circuit; without changing the voltage Electricity Class 10th Ncert Notes Key Electricity Class 10th Ncert Notes Key from the source; is called Rheostat and that resistance is called variable resistance. Set up a circuit as shown. Note reading in the ammeter and voltmeter; at different values of potential by changing the battery. Every time you will find different values of current i and potential difference V in ammeter and voltmeter.
Plot these values on graph and observe the nature of the graph. The graph of V potential Electricity Class 10th Ncert Notes Key Electricity Class 10th Ncert Notes Key difference versus i electric current is always a straight line. Resistors in Series : When resistors are joined Electricity Class 10th Ncert Notes Key from end to end, they are said to be in series combination. Value of current in the ammeter Electricity Class 10th Ncert Notes Key is same irrespective of its position in the circuit.
So we conclude that in a series combination of resistors the current is same in every part of the circuit or same current flow through each resistor. If we add potential difference across each one of resistors R 1R 2 and R 3 Electricity Class 10th Ncert Notes Key then we. Resistors in parallel: When resistors are joined in parallel, they are said to be in parallel Electricity Class 10th Ncert Notes Key Electricity Class 10th Ncert Notes Key combination.
Note : When number of resistors are connected in parallel then their combined resistance is less than the smallest individual resistance. While in series combination, equivalent resistance is always greater than any individual resistance. Let Electricity Class 10th Ncert Notes Key I current flowing through a resistor of resistance R and potential across the resistor is V. When charge Q moves against the potential difference V in time t, the amount of work is.
Battery has chemical energy due to which it can do work. But total energy is always conserved. Chemical energy of battery is converted nottes heat energy in the resistor. This heating of resistor is commonly known as Heating Effect of Electric Current.
It states that heat produced in a resistor is directly proportional to Class 10th Key Notes Ncert Electricity the square of current given to the resistor, directly proportional to the resistance for a given current and directly proportional to the time for which the current is flowing through the resistor. For exploiting the Electricity Class 10th Ncert Notes Key heating effect, electricity class 10th ncert notes key element of appliances must have high melting point to retain more heat.
The heating effect of electric current is used in the following applications:. The heating of Electricity Class 10th Ncert Notes Key electric bulb happens because of heating effect of electric current. The filament of bulb is generally made of tungsten metal; having melting point equal to 0 C. The element of electric iron is made of alloys having high melting point. Electric fuse is made of metal or alloy of metals, such as aluminium, copper, iron, lead.
In the case of flow of higher voltage than specified, fuse wire melts and 10th Electricity Ncert Key Notes Class protects the electric appliances. Thus, in this case electrixity fuse of 5A should be used to protect the electric heater in the case of flow of higher voltage.
Rating of device is the value of electric power and potential of that electric device. If we know the rating of any electrical device we can easily find the value of resistance. As i know number of free electrons increase when temperature Electricity Class 10th Ncert Notes Key ncer so its resistance should be decressed? The notes electricity class 10th ncert notes key clear and right on point. It's really a good and great job that is every much useful for many Electricity Class 10th Ncert Notes Key students those were preparing for their board exam.
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Com please always being with us Electricity Class 10th Ncert Notes Key and always gave such a great notes again thnc. In the experimental verification of electricith law. I think instead of changing the battery we could use rheostat.
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