A rectangular solid made of carbon has sides of lengths 1.0 cm, 2.0 cm, and 4.0 cm, lying along the x, y, and z axes, respectively. Determine the resistance for current that passes through the solid in the x-direction. ρ = 3 × 10

Engineering

Physics

SI Units

Basic Circuit Theory and Kirchoffs Law for DC Circuit

Conductor

Question

A rectangular solid made of carbon has sides of lengths 1.0 cm, 2.0 cm, and 4.0 cm, lying along the x, y, and z axes, respectively. Determine the resistance for current that passes through the solid in the x-direction. ρ = 3 × 10^–3 Wm.

$\frac{2}{5} Ω$

$\frac{3}{80} Ω$

$\frac{3}{20} Ω$

$\frac{3}{5} Ω$

LiveFree JEE Main Previous Year Online Papers Live Free JEE Advance Previous Year Online Papers

College PredictorLive

Know your College Admission Chances Based on your Rank/Percentile, Category and Home State.

Get your JEE Main Personalised Report with Top Predicted Colleges in JoSA

$R = \frac{ρl}{A} = \frac{3 \times 10^{- 3} \times 10^{- 2}}{8 \times 10^{- 4}} = \frac{3}{80} Ω$