The Potential Difference Across the Ends of a Wire Is

The potential difference across the ends of a wire is doubled in magnitude.If Ohm's law is obeyed,which one of the following statements concerning the resistance of the wire is true?

A) The resistance is one half of its original value.
B) The resistance is twice its original value.
C) The resistance is not changed.
D) The resistance increases by a factor of four.
E) The resistance decreases by a factor of four.

Correct Answer:

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