The resistance of metal wire of length 1m is 25 ohms if diameter of wire is 0.3mm what will be the resistance of wire of length 3m and diameter 0.5mm ,if the wire of same material
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Electricity has an important place in modern society. It is a controllable and convenient form of energy for a variety of uses in homes, schools, hospitals, industries and so on. What constitutes electricity? How does it flow in an electric circuit? What are the factors that control or regulate the current through an electric circuit? In this Chapter, we shall attempt to answer such questions. We shall also discuss the heating effect of electric current and its applications.
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