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The Length of a Certain Wire Is Halved While the Radius

Question 29

Multiple Choice

The length of a certain wire is halved while the radius is doubled. What is the change in the resistance of this wire?


A) It stays the same.
B) It is reduced by a factor of 2.
C) It is reduced by a factor of 4.
D) It is reduced by a factor of 8.
E) It is quadrupled.

Correct Answer:

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