A 0–300V voltmeter has a guaranteed accuracy of 1% of

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A 0–300V voltmeter has a guaranteed accuracy of 1% of full scale reading. The voltage measured by the instrument is 83. The percentage limiting error is:

1. 0·95%
2. 1·81%
3. 3·62%
4. 4·83%

Correct Option: C

Given voltmer range 0 – 300V
measured value = 83V
Magnitude of limiting error of the instrument
δA = E_r × V
= 0·1 × 300 = 3V
The magnitude of the voltage being measured is 83V.
The percentage relative error at this current is

E_r =	δA	× 100 =	3	× 100
	A		83

or
E_r = 3·62%