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AP Physics C: E&M
11.3 Resistance, Resistivity, and Ohm’s Law
IntermediateMCQMathematicalConceptual20k
Truncated cone conductor of length L with end radii r_1 and r_2 carrying current I.
Truncated cone conductor of length L with end radii r_1 and r_2 carrying current I.
A solid conductor of length \(L\) and uniform resistivity \(\rho\) is shaped as a truncated circular cone. The circular end faces have radii \(r_1\) and \(r_2\), and the cross-sectional radius varies linearly with distance along the central axis. Current enters one end face and exits the other, flowing uniformly and parallel to the central axis. Which of the following expressions represents the total electrical resistance of the conductor?

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