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(i) Explain the term : 'Heating effect of electric current'.(ii) Derive an expression for the heat produced by electric current and state Joule's Law.(iii) Explain why an inert gas like argon is filled in bulbs |
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Answer» (i) Heating effect of electric current : When an electric current is passed through a high resistance wire like nichrome, the resistance wire becomes very hot and produces heat. This is called heating effect of electric current. |
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