Asked by Abdulganiyu

The electrical resistance of wire varies inversely as the square root of the radius. If the resistance is 200 when the radius is 9cm find the resistance when radius is 4cm?

Answers

Answered by Anonymous
R = k / r^(1/2)
200 = k /3
k = 600
if r = 4
R = 600 / 2 = 300
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