The area of cross-section of a metallic wire is 4×10⁻⁸ m² and it's specific resistance is 10× 10⁻⁸ Ohm meter. If the resistance of wire is 25 Ohm , what would be it's length
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Answer:
the length would be 25 m
Explanation:
R=ρ
Given R=25 , ρ = 10 × (10^(-8)) , A = 4 × (10^(-8))
25=10××
25 = l
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