The manufacturing of a digital voltmeter give as its specification
accuracy ±1% with an additional uncertainty of ±10mV
The metal reads 4.072v
How should this reading be recorded together with it uncertainty?
Options:
A: (4.07±0.01)v
B: (4.07±0.04)v
C: (4.72±0.052)v
D: (4.07±0.05)v
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Answers
Answer:
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Answer:
The reading recorded together with its uncertainty is = (4.07 ± 0.05) V
Explanation:
Voltmeter: A voltmeter, also called a voltmeter, is a device that measures the voltage or potential difference between two points in an electronic or electrical circuit. Voltmeters are typically used in alternating current (AC) or direct current (DC) circuits. Alternatively, the radio frequency (RF) voltage can be measured with a special voltmeter.
The specifications of the digital voltmeter are as follows.
"Accuracy ± 1%, additional uncertainty ± the 10 mV ”
The meter displays 4.072V.
∴ Recorded reading = (4.072 ± 1% ± 10 mV)
= (4.072 ± 1% ± 0.010)
= (4.072 ± 0.04072 ± 0.010)
= (4.07 ± 0.05) V (Errors have only 1sf and main
Reads follow the number of decimal places in the error.
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