The Length of a Certain Wire Is Kept Same While

question 30

Multiple Choice

The length of a certain wire is kept same while its radius is doubled. What is the new resistance of this wire?

• A) It is reduced by a factor of 4.
• B) It is reduced by a factor of 2.
• C) It is increased by a factor of 4.
• D) It is reduced by a factor of 8.
• E) It is increased by a factor of 2.

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