Two resistance are given as R 1 = (10 ± 0.5) 
and R 2 = (15 ± 0.5) 
. The percentage error in the measurement of equivalent resistance when they are connected in parallel is
Text Solution
Verified by ExpertsThe correct answer is:
D
For a parallel combination the equivalent resistance is
….(i)
A general expression for error can be written as x ± 
x
Differentiating equation (i)
…(ii)
The equivalent resistance with 
& 
Substituting the above value in equation (ii)
Hence, the percentage error is
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