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13.02.2021Author: admin

Notes of Ch 12 Electricity| Class 10th Science

Hey there! We receieved your request. Protons and electrons possess some charge. Proton has positive charge. Electron has negative charge. Neutron electticity not possess any charge. Like charges repel each other and unlike charges attract each. Conductors are those materials in which electrons can move freely. All metals electricity class 10th ncert notes conductors. Insulators do not have any free electrons to. For examplewood and plastic. The flow of electric charge is known as Electric Current.

It is expressed in terms of rate of flow of charges. Work done per unit charge in taking charge from one point to another is known as Potential Difference. The unit of potential difference is nores V. Potential difference between two points is directly proportional to the current, provided temperature is constant.

When two or more resistors electricity class 10th ncert notes joined in series, then their total resistance is given by the formula. In this case, voltage is same across each resistor and is equal to applied voltage. C,ass current is given as. Advantages of Parallel Combination over Series Combination. If one component fails in series combination, then complete circuit is broken and no component can work properly.

Different appliances need different current, this can be met through parallel. When charge Q moves against the potential difference V in time t, the electricity class 10th ncert notes of work is given by. Filament of electric bulb is made up of tungsten because it has a very high melting point and also does not oxidize readily at a high temperature. The rate at which electric energy is dissipated or consumed in an electric current.

The SI unit of power is Watt. DearPreparing for entrance exams? Register yourself for the free demo class from askiitians. Please choose valid. Please Enter the valid Email. Select Grade 6th 7th 8th 9th 10th 11th 12th 12th Pass Please choose the valid grade. We receieved your request Stay Tuned as we are going to contact you within 1 Hour Close.

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Revision Notes on Electricity Charge Protons and electrons possess some charge. Conductors and Insulators Conductors are those materials in electricity class 10th ncert notes electrons can move freely. Electric Current Nxert flow of electric charge is known as Electric Current. The SI unit of electric current is Ampere A. Direction of electric current is same as direction of positive charges and opposite to the direction of flow of negative charges.

Potential Difference Work done per ellectricity charge in taking electricity class 10th ncert notes from one point to another is known as Potential Difference. Inversely proportional to the area of cross-section. Directly proportional to the temperature. Depends electrivity nature of material.

Resistivity Resistivity is the property of the material. The SI unit of resistivity is ohm-metre. Resistivity of metals varies from 10 -8 to 10 Resistivity of insulators varies from 10 12 to 10 17 Copper and aluminium are used in electrical transmission due to their low resistivity. It is also directly proportional to resistance for a given current.

Electric fuse is a safety device to protect the electrical appliance from short circuit. Electric Power The rate at which electric energy is dissipated or consumed in an electric current.

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Resistance: The resistance of a conductor is its property by virtue of which it opposes the flow of current through it. Electric fuse is made of metal or alloy of metals, such as aluminum, copper, iron, lead, etc. In practical application, resistors are used to increase or decrease the electric current. Therefore, terminal potential difference is equal to the emf to the cell. Electric potential difference is known as voltage, which is equal to the amount of work done to move the unit charge between two points against static electric field. Chemistry Important Questions for Class 12 Exams. How then is current established almost the instant a circuit is closed?

Thus:

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