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September 16, 2014

Homework Help: physics

Posted by help on Sunday, April 12, 2009 at 3:21pm.

A gold wire 5.90m long and of diameter 0.890 mm carries a current of 1.21A.
A)Find the resistance of this wire.
B)Find the potential difference between its ends.
Can someone please help me I don't know how to answer these questions?
R=p(L/A) 1.21(5.90m/.890mm)
Am i setting this up right?

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