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Answer :
Complete question :
the resistance r =v/i where v = (100±5 )v and I = (10±0.2) a.find percentage error in r
Answer:
7%
Explanation:
Given that :
R = V/I
V = 100 ± 5
I = 10 ± 0.2
Percentage error in R can be obtained thus :
[(dV / V) + (dI / I)] * 100%
dV = ± 5
dI = ± 0.2
[(5 / 100) + (0.2 / 10)] * 100%
(0.05 + 0.02) * 100%
= 0.07 * 100%
= 7%
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