Answer:
80. ------------------------
Explanation:
just use the formula
R=r L/A
where r is resistivity L is length and A is area of the wire
I think the resistivity should be of the power -8 cause copper is a good conductor
so
L=RA/r =250*π/6.4= 122.7 metre
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Answers & Comments
Answer:
80. ------------------------
Explanation:
just use the formula
R=r L/A
where r is resistivity L is length and A is area of the wire
I think the resistivity should be of the power -8 cause copper is a good conductor
so
L=RA/r =250*π/6.4= 122.7 metre