A resistor is made out of a wire having a length L.When the ends of the wire are attached across the terminals of an ideal battery having a constant voltage V₀ across its terminals,there is current I through the wire.If the wire were cut in half,making two wires of length L/2,and both wires were attached across the terminals of the battery (the right ends of both wires attached to one terminal,and the left ends attached to the other terminal),how much current would the battery put out? A)4I B)2I C)I D)I/2 E)I/4

Question

Quizplus · Accepted Answer

When the wire is cut in half, the resistance of each half will be twice the original resistance. Since the voltage across the battery remains the same, the current through each half will be half the original current. Therefore, the total current through the battery will be 2 * (I/2) = I.

A Resistor Is Made Out of a Wire Having a Length