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Errors and Compensation

Two 100μ A fu...

Question

Two $100 μ A$ full sale PMMC meters are employed to construct a 10 V and a 100 V full scale voltmeter.These meters will have figure of merits (sensitivities)as

A

10 k Ω / V a n d 10 k Ω / V

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B

100 k Ω / V a n d 10 k Ω / V

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C

100 k Ω / V a n d 100 k Ω / V

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D

10 k Ω / V a n d 1 k Ω / V

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Solution

The correct option is A $10 k Ω / V a n d 10 k Ω / V$
$B o t h m e t e r s a r e h a v i n g s a m e I_{f s d} a s 100 μ A .$

$∴ S e n s i t i v i t y = \frac{1}{100 \times 10^{- 6}} = 10 k Ω / V f o r e a c h .$

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