A rectangular parallelopiped is measured as 1 cm × 1 cm × 100 cm . If its specific resistance is 3 × 10 - 7 Ω m , then the resistance between its two opposite rectangular faces will be _____ × 10 - 7 Ω .

Step-by-step solution

It is given that l   =   1   cm   =   0 . 01   m A   =   100   cm   ×   1   cm =   100   cm 2 ⇒ A =   0 . 01   m 2 ρ = 3 × 10 - 7   Ω   m Using the formula of resistance, R = ρ l A = 3 × 10 - 7 × 0 . 01 0 . 01 = 3 × 10 - 7 Ω