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प्रश्न
What will be the resistance of a metal wire of length 2 metres and area of cross-section 1.55 × 10−6 m2 if the resistivity of the metal be 2.8 × 10−8 Ω m?
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उत्तर
Length of the cable wire, l = 2 m
Area of cross-section, A = 1.55 × 10−6 m2
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