Asked by chinaemerem
the electrical resistance of a wire varies inversely as the square of the radius.if the resistance is 0.24ohms the radius is 0.05. Find the resistance when the radius is 0.04. Solve using variation
Answers
Answered by
Reiny
R = k/r^2
when R = .24, r = .05
.24 = k/.0025
k = .006
when r = .04
R = .006(1/.0016) = .375
when R = .24, r = .05
.24 = k/.0025
k = .006
when r = .04
R = .006(1/.0016) = .375
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