1.

Calculate the resistance of 100 m long copper wire. The diameter of the wireis 1 mm, take rhow 1.7 x 10 power -8 ohm m.​

Answer»

ANSWER:

resistance = 40.8 OHM

Explanation:

the length = 100m

diameter = 1mm = 0.001m

radius = 0.0002m

area of CROSS section = 0.00000004π m

resistance =

(1.7 *10^-8 *100)/0.00000004 ohm

=(1.7*10^10 ) /4*10^8 ohm

=(1.7*100)/4 ohm

= 40.8 ohm



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