SOLUTION: If a wire 0.01 in. In diameter has a resistance of 0.351 ohm, what is the resistance of a wire of the same length and material with a diameter 0.0345 in. To the nearest ten-thousan

Algebra ->  Proportions -> SOLUTION: If a wire 0.01 in. In diameter has a resistance of 0.351 ohm, what is the resistance of a wire of the same length and material with a diameter 0.0345 in. To the nearest ten-thousan      Log On


   

Question 1096974: If a wire 0.01 in. In diameter has a resistance of 0.351 ohm, what is the resistance of a wire of the same length and material with a diameter 0.0345 in. To the nearest ten-thousandth.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
R=%28rho%2AL%29%2FA
For constant length,
R%5B1%5DA%5B1%5D=R%5B2%5DA%5B2%5D
R%5B1%5D%28pi%2F4%29D%5B1%5D%5E2=R%5B2%5D%28pi%2F4%29D%5B2%5D%5E2
R%5B1%5DD%5B1%5D%5E2=R%5B2%5DD%5B2%5D%5E2
R%5B2%5D=R%5B1%5D%28D%5B1%5D%2FD%5B2%5D%29%5E2
R%5B2%5D=0.351%280.01%2F0.0354%29%5E2