Transcription of CHAPTER12 Electricity - NCERT
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CHAPTER12 Electricity - NCERT
Electricity12 CHAPTERE lectricity has an important place in modern society. It is a controllableand convenient form of energy for a variety of uses in homes, schools,hospitals, industries and so on. What constitutes Electricity ? How doesit flow in an electric circuit? What are the factors that control or regulatethe current through an electric circuit? In this Chapter, we shall attemptto answer such questions. We shall also discuss the heating effect ofelectric current and its ELECTRIC CURRENT AND ELECTRIC CURRENT AND ELECTRIC CURRENT AND ELECTRIC CURRENT AND ELECTRIC CURRENT AND CIRCUITWe are familiar with air current and water current.
flows through a conductor (for example, through a metallic wire), we say that there is an electric current in the conductor. In a torch, we know that the cells (or a battery, when placed in proper order) provide flow of char ges or an electric curr ent thr ough the tor ch bulb to glow. W e
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