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10. Define resistance. State its SI unit. How does resistance vary with length and area ofcross-section of the wire? |
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Answer» The SI unit of resistance is Ohm'sIt is the interruption in the path of electric current which slows down the flow and produces heat. Larger will be thearealower will be theresistanceand vice versa. this is because through a conductor with largearea of cross sectioncurrent can easily flow and henceresistanceis low.Cross sectional areais inversely proportional toresistance. |
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