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Measurements and Instrumentation - Engineering

Q1:

A high resistance was measured by loss of charge method. The voltmeter resistance was 1010 ohms. The calculation gave the value of unknown resistance as 0.8 x 109 ohms. The true value of resistance is

A 0.8 x 109 Ω

B less than 0.8 x 109 Ω

C more than 0.8 x 109 Ω

D either (b) or (c)

ANS:C - more than 0.8 x 109 Ω

Let unknown resistance be R. Evidently R is more than 0.8 x 109 ohm.