Consider the following. (Take R1 = 11.1 Ω, R2 = 5.1 Ω, and R3 = 4.1 Ω.) (a) Find the equivalent resistance between points a and b in the figure below. (b) Find the potential difference Vab that will produce a current of 1.0 A in the 2.0 Ω resistor.

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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.