A rectangular parallelopiped is measured as $1 c m \times 1 c m \times 100 c m$ . If its specific resistance is $3 \times 1 0^{- 7} Ω m$ , then the resistance between its two opposite rectangular faces will be _____ $\times 1 0^{- 7} Ω$ .

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It is given that l = 1 c m = 0.01 m A = 100 c m × 1 c m = 100 c m 2 ⇒ A = 0.01 m 2 ρ = 3 × 1 0 − 7 Ω m Using the formula of resistance, R = A ρl ​ = 0.01 3 × 1 0 − 7 × 0.01 ​ = 3 × 1 0 − 7 Ω

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