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The specific resistance of a wire is ρ, its volume is 3 m^3 and its resistance is 3 ohm, then its length will be

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The specific resistance of a wire is ρ, its volume is 3 m3 and its resistance is 3 ohm, then its length will be 

(a) √1/ρ

(b) √3/√ρ

(c) √3/ρ

(d) ρ/√3

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