Electricity Class 10th Ncert Notes Network
What does Electricity Class 10th Ncert Notes Network an electric circuit mean? Answer A continuous and closed path of an electric current is called an electric circuit. An electric circuit Electricity Class 10th Ncert Notes Network Electricity Class 10th Ncert Notes Network consists of electric devices, source of electricity and wires that are connected with the help of a switch.
Define the unit of current. Answer The unit of electric current is ampere A. Calculate the number of electrons constituting one coulomb of charge. Answer One Electricity Class 10th Ncert Notes Network electron possesses a charge of 1. Let the resistance of an electrical component remains constant while the potential difference across the Electricity Class 10th Ncert Notes Network Electricity Class 10th Ncert Notes Network two ends of the component decreases to electricity class 10th ncert notes network of its former value. What change will occur in the current through it?
What are the advantages of connecting electrical devices in parallel with the battery instead of connecting them in Electricity Class 10th Ncert Notes Network series? R is the equivalent resistance of resistances 0. These are connected in series. Hence, the sum of the resistances will give the value of R. Each component of a series circuit receives a small voltage so the amount of current decreases and the device becomes hot and does not work properly.
Hence, series arrangement is not used in domestic circuits. So they are usually used for electricity transmission. Previous Post Next Post. Contact form. LinkList ul li ul'. Tabify by Templateify v1. Constantan alloy of Cu Electricity Class 10th Ncert Notes Network Electricity Class 10th Ncert Notes Network and Ni. Manganin alloy of Cu, Mn and Ni.
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This means, resistance increases with increase in length of the conductor. This is the cause that long electric wires create more resistance to the electric current.
This means R will decrease with an increase in the area of conductor and vice versa. More Class 10th Ncert Geography Notes Query area of conductor facilitates the flow of electric current through more area and thus, decreases the resistance.
This is the cause that Electricity Class 10th Ncert Notes Network thick copper wire creates less resistance to the electric current. It Electricity Class 10th Ncert Notes Network is called the electrical resistivity of the material of conductor. The Electricity Class 10th Ncert Notes Network Electricity Class 10th Ncert Ncert Notes For Class 10th Science Year Notes Network S. Resistivity: It is defined as the resistance offered by a cube of a material of side 1m when current flows perpendicular to its opposite faces. Resistivity depends on the nature of the material of the conductor.
Silver has resistivity equal to 1. Rubber and glass are very good insulators. The resistivity of materials Electricity Class 10th Ncert Notes Network varies with temperature. Combination of resistors Series and Parallel combination , the heating effect of electric current and electric power. Combination of Resistors i Series combination ii Parallel combination. Resistors in Series: When resistors Electricity Class 10th Ncert Notes Network are joined from end to end, it is called in series. In this case, the total resistance of the system is equal to the sum of the resistance of all the resistors in the system.
Let, three resistors R 1 , R 2 , and Electricity Class 10th Ncert Notes Network R 3 get connected in series. Resistors in Parallel: When resistors are joined in parallel, the reciprocal of the total resistance of the system is equal to the sum of reciprocal of the resistance of resistors. Let three resistors R 1 , R 2 and R 3 Ncert Solutions Class 10th Bholi Network connected in parallel.
The total current through the Electricity Class 10th Ncert Notes Network circuit can be calculated by adding the electric current through individual resistors. Heating Effect of Electric Current: When electric current is supplied Electricity Class 10th Ncert Notes Network to a purely resistive conductor, the energy of electric current is dissipated entirely in the form of heat and as a result, resistor gets heated. The heating of resistor because of dissipation of electrical energy is commonly known as Heating Effect of Electric Current.
Some examples are as follows : When electric energy is supplied to an electric bulb, the filament gets heated because of which, it gives light. The heating of electric bulb happens because of Electricity Class 10th Ncert Notes Network heating effect of electric current. Cause of Heating Effect of Electric Current: Electric current generates heat to overcome the resistance offered by the conductor through which it passes. Higher the resistance, the electric current will generate higher amount of heat.
Thus, generation of heat Electricity Class 10th Ncert Notes Network by electric current while passing through a conductor is an inevitable Electricity Class 10th Ncert Notes Key consequence. This heating effect is used in many appliances, such as electric iron, electric heater, electric geyser, etc. Electric Bulb: In Electricity Class 10th Ncert Notes Network an electric bulb, the filament of bulb gives light because of Electricity Class 10th Ncert Notes Network the heating effect of electricity.
Electric Fuse: Electric fuse is used to protect the electric appliances from high voltage if any. Electric fuse is made of metal or alloy of metals, such as aluminum, copper, iron, lead, etc. In the case of flow of higher voltage than specified, fuse wire melts and protect the electric appliances. Suppose, if an electric heater consumes W at V.
Electric Power S. Unit of electric energy is kilowatt-hour kWh. Conductor: The material which can allow the flow of electrons through itself is called the conductor. It has a large number of free electrons. It offers low opposition in the flow of current.
Insulator: Electricity Class 10th Ncert Notes Network The material which does not allow the flow of electrons through itself is called insulator. It has less or no free electrons.
It offers high opposition in the flow of current. Electric Current: The amount of flow charge through any cross-sectional area of Electricity Class 10th Ncert Notes Network a conductor in unity time is called Electric Current. Electric Current Electricity Class 10th Ncert Notes Network is a scalar quantity. It is measured by an ammeter. Direction: Electricity Class 10th Ncert Notes Network Electricity Class 10th Ncert Notes Network The direction of conventional current or practical current is opposite to the flow of electrons. Electric potential: Electric Potential at any point in the electric field is defined as the amount of work done to bring the unit positive charge from infinity from outside the electric field to that point.
It is a scalar quantity. The -ve charge flows from lower to a higher potential. The Electricity Class 10th Ncert Notes Network difference of electric potential between any two points in the electric field is called Electric Potential difference. The unit of current is Ampere. Potential Difference:. The potential difference between two separate points is defined as the work done to move a unit positive Electricity Class 10th Ncert Notes Network charge from one point to another. The unit of potential difference is Volt.
Resistance in a series connection:. Resistance in parallel:. Heating Electricity Class 10th Ncert Notes Network Effect of current:. Electric iron, toaster, fused wire, etc. Electric power:.
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