solve to find the length
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by using the formmula
l =r area/resist.
l= (5)^2 into(5)3.14 into 10^-6/(0.8)10^8
l=4.90m
l =r area/resist.
l= (5)^2 into(5)3.14 into 10^-6/(0.8)10^8
l=4.90m
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