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प्रश्न
A 10 m long wire of a particular material is of reistance 5Ω What will be the resistance of 5m long wire of same material and the same thickness.
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उत्तर
Given: The resistance of 10 m long wire = 5 Ω
R α l for the same thickness material so if the length of wire becomes half of the previous value, resistance will also become 1/2th of its previous value.
Or R = `1/2 xx 5 Omega = 2.5 Omega`
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