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Comparison Between Magnetic and Electric Circuits 1 Magnetic Circuit Electric Circuit M.M.F. (ampere-turns) E.M.F. (volts) Flux Φ (webers) Current I (amperes) Flux density B (Wb/m2) Current density (A/m2) Reluctance S …
Comparison Between Magnetic and Electric Circuits Read MoreWork Power Energy SI Units Work Power Energy – SI Units 1. Mass. It is quantity of matter contained in a body. Unit of mass is kilogram (kg). Other multiples …
Work Power and Energy SI Units Read MoreWhat Is Internal Resistance ? What Is Internal Resistance ? Internal resistance refers to the opposition to the flow of current offered by the cells and batteries themselves resulting in …
What Is Internal Resistance Read MoreEffect of Temperature on Resistance The effect of rise in temperature is : (i) to increase the resistance of pure metals. The increase is large and fairly regular for normal …
Electric Currents & Ohm’s Law – Effect of Temperature on Resistance Read MoreElectric Currents & Ohm’s Law – Units of Resistivity Example 8 Question : The resistance of the wire used for telephone is 35 Ω per kilometer when the weight of the …
Electric Currents & Ohm’s Law – Units of Resistivity example 8 Read MoreElectric Currents & Ohm’s Law – Units of Resistivity example 7 Question : The resistivity of a ferric-chromium-aluminium alloy is 51 × 10−8 Ω-m. A sheet of the material is 15 …
Electric Currents & Ohm’s Law – Units of Resistivity example 7 Read MoreElectric Currents & Ohm’s Law – Units of Resistivity example 6 Question : A piece of silver wire has a resistance of 1 Ω. What will be the resistance ofmanganin …
Electric Currents & Ohm’s Law – Units of Resistivity example 6 Read MoreElectric Currents & Ohm’s Law – Units of Resistivity example 5 Question : A lead wire and an iron wire are connected in parallel. Their respective specific resistances are in the ratio …
Electric Currents & Ohm’s Law – Units of Resistivity example 5 Read MoreElectric Currents & Ohm’s Law – Units of Resistivity example 4 Question : Calculate the resistance of 1 km long cable composed of 19 stands of similar copper conductors, each strand …
Electric Currents & Ohm’s Law – Units of Resistivity example 4 Read MoreElectric Currents & Ohm’s Law – Units of Resistivity example 3 Question : (a) A rectangular carbon block has dimensions 1.0 cm × 1.0 cm × 50 cm. (i) What is …
Electric Currents & Ohm’s Law – Units of Resistivity example 3 Read More