27. Resistors & DC Circuits
Resistors and Ohm's Law
Multiple Choice
Multiple ChoiceA certain wire has length L and radius r, and a resistance of R. That wire is melted down and the same volume of the same metal is used to produce a wire with length 2L. What is the resistance of the resulting wire?
A
B
C
8R
D
R
E
4R
F
2R
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