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AP Physics 2
11.1 Electric Current
IntermediateMCQMathematicalConceptual22.4k
A horizontal tapered cylindrical conductor extending along the horizontal axis. On the left side, cross section 1 has a smaller circular radius labeled R. On the right side, cross section 2 has a larger circular radius labeled 2R. A steady current I enters from the left and exits to the right. Conduction electrons move to the left. No other labels, lines, text, or axes appear.
Tapered cylindrical conductor carrying a steady current.
A steady electric current passes through a tapered cylindrical metallic wire. Cross section 1 has a radius \(R\), and cross section 2 has a radius \(2R\). Which of the following correctly compares the electric current \(I\) and the drift speed \(v_d\) of the conduction electrons at cross section 1 to those at cross section 2?

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