The length of a certain wire is doubled and at the same time its radius is also doubled. What is the new resistance of this wire?
A) It is $1 / 2$ as large.
B) It stays the same.
C) It is 4 times as large.
D) It is $1 / 4$ as large.
E) It is 2 times as large.

Question

The length of a certain wire is doubled and at the same time its radius is also doubled. What is the new resistance of this wire? 
A) It is $1 / 2$ as large.
B) It stays the same.
C) It is 4 times as large.
D) It is $1 / 4$ as large.
E) It is 2 times as large.

Quizplus · Accepted Answer

The Answer is A

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