explain law of resistance.... ...............
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1st law of resistance
The resistance of conductor is directly proportional to the length of the conductor. Greater is the length of conductor greater will be the resistance, similarly smaller is the length, and smaller will be the resistance of the conductor.
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Resistance of a conductor is directly proportional to its length, provided temperature and other physical conditions remain unchanged. It means that R ∝ l i.e., if the length increases, the resistance also increases and if length decreases, its resistance also decreases.
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