1. The load across a 12-V battery consists of a series combination of three resistances are 15 2, 21 2, and 24 2, respectively. What is the magnitude of the circuit current? A. 0.20 A В. 5 А С. 1260 A D. 2 A 2. The load across a 50.0-V battery consists of a series combination of two lamps with resistances of 1252 and 225 Q. What is the total resistance of the circuit? A. 350 2 В. 100 2 C. 125 2 D. 225 2 3. 15.0-2 resistor is connected in series to a 120-v generator and two 10.0-2 resistors that are connected in parallel to each other. What is the total resistance of the load? A. 202 В. 10 8 C. 50 D. 15 2

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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.