A conductor with rectangular cross-section has dimensions a × 2 a × 4 a as shown in the figure. Resistance across A B is x , across C D is y and across E F is z . Then - .

Question

A conductor with rectangular cross-section has dimensions a × 2 a × 4 a as shown in the figure. Resistance across A B is x , across C D is y and across E F is z . Then - ., x = y = z, x > y > z, y > z > x, x > z > y

MARKS App · Accepted Answer

We know that R = ρ l A x = ρ 4 a a × 2 a = 2 ρ a y = ρ a 2 a × 4 a = ρ 8 a z = ρ 2 a a × 4 a = ρ 2 a ∴ x > z > y

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