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The Length of a Certain Wire Is Doubled and at the Same

Question 39

Multiple Choice

The length of a certain wire is doubled and at the same time its radius is reduced by a factor of 2. What is the new resistance of this wire?


A) It is 4 times as large.
B) It is 1/21 / 2 as large.
C) It it 8 times as large.
D) It is 6 times as large.
E) It is 2 times as large.

Correct Answer:

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