The Length of a Certain Wire Is Kept Same While

question 149

Multiple Choice

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

• A)It is increased by a factor of 2.
• B)It is increased by a factor of 4.
• C)It is reduced by a factor of 2.
• D)It is reduced by a factor of 4.
• E)It does not change.

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