Asked by June

A wire 3.00 m long and .450 mm2 in cross-sectional area has a resistance of 41.0Ω at 20 degrees C. If its resistance increases to 41.4Ω at 29.0 C, what is the temperature coefficient of resistivity?
Answered by bobpursley
why are you posting under different names?


changeresistane=tempcoeff*deltTemp
.4=tempcoeff*9C

solve for tempcoefficent
Answered by Mini
oh its a group of six friends working together and i didn't know they all posted it twice...sorry about that
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