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 (the figure (Figure 1). Assume the resistivity is ρ = 2.7×10−5 Ω⋅m. Determine the resistance for current that passes through the solid in a) the x direction b) the y direction c) the z direction

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Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.