A Wire 1 Mm in Diameter Is Connected to One

question 66

Multiple Choice

A wire 1 mm in diameter is connected to one end of a wire of the same material 2 mm in diameter of twice the length.A voltage source is connected to the wires and a current is passed through the wires.If it takes time T for the average conduction electron to traverse the 1-mm wire,how long does it take for such an electron to traverse the 2-mm wire?

• A)T/4
• B)T
• C)4T
• D)8T

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