The resistance of a conductor is given by R= V/I , where V= (200±5) V and I= (20±0.4)A. Calculate total error in R.
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R=200/20 = 10ohm
ΔR/R = ΔV/V + ΔI/I = 5/200 + 0.4/20 = 9/200
ΔR = 9/200 x 10 = 0.45
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