resistance of a metal wire of length 2 metre is 30 ohm at temperature 25 degree Celsius if the diameter of the wire is 0.6 mm then what will be the resistivity of the metal at the temperature
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Answered by
1
Answer:
resistivity=rho =8.4 ohm metre
Explanation:
area of cross section=a =2*3.14*r*r=6.28*0.09=0.56
wkt,
resistivity,rho=resistance*area of cross section/length of conductor
=> rho= 30*0.56/2
=16.8/2
=8.4 ohm metre.
Answered by
0
Answer:
length x resistance x diameter of wire/tempreature=constant
Explanation:
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