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Question

A (0 - 40)A ammeter has a guaranteed accuracy error of 2% of the full scale reading. If the current measured by this instrument is 10 A, the value of relative limiting error in percentage will be

A
2%
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B
4%
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C
0.5%
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D
8%
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Solution

The correct option is D 8%
Ammeter is accurate upto value

=2100×40=0.8 A

Relative limiting error

=0.810×100=8%

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