Meter bridge is used to find resistance of a wire using a standard resistance 20 Ω with 0.5% tolerance. The unknown resistance is placed in left gap of the meter bridge. The null point is obtained at 60.0 cm from left end. The maximum permissible error in this measurement is 0.1 cm. Find the maximum error in measurement of the resistance.
Text Solution
Verified by ExpertsThe correct answer is:
D
x = R 
= 30 Ω
= 
+ 
+ 
Δ x = 
= 0.27 Ω
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