A rectangular solid made of carbon has sides of lengths 1.0 cm, 2.0 cm, and 4.0 cm,

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 (Fig. 18-35). Determine the resistance for current that passes through the solid in.
(a) The x direction,
(b) The y direction, and.
(c) The z direction. Assume the resistivity is p = 3.0 X 10-5 Ω ∙ m.