APFIVE Factors Affecting Electrical Resistance
Two identical wires with the same potential difference applied across them carry different currents. Wire X carries twice the current of Wire Y. Which of the following could explain this observation?
A
Wire X has twice the temperature of Wire Y
B
Wire Y has twice the resistivity of Wire X
C
Wire Y has twice the cross-sectional area of Wire X
D
Wire X has twice the length of Wire Y
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