The Potential Difference Across the Ends of a Wire Is

question 8

Multiple Choice

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.

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