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OpenStudy (anonymous):
An iron wire has length 8.0 m and diameter 0.50 mm. The wire has resistance R. A second iron wire has length 2.0 m and diameter 1.0 mm. What is the resistance of the second wire?
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OpenStudy (anonymous):
what type of resistance...... thermal , electrical, or etc.........
OpenStudy (anonymous):
it does not say these are the choices r over 16 is the correct answer i dont know how they got it and for b and c its r over 8 and r over 2 A 16 R B 8 R C 2 R D R
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