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March 28, 2015

Homework Help: physics

Posted by BOBBY on Monday, April 16, 2012 at 6:04pm.

One mile of copper wire has a resistance of 13 Ω. Using the wire to electrically connect two terminals that are half a mile apart, rank the following situations in order of increasing resistance.

I. Use the full length of wire.
II. Cut the wire in half and use only one half.
III. Cut the wire in half and use both halves, connecting both wire ends at both terminals.

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