A periodic voltage wavefor m obser ved on an oscilloscope

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A periodic voltage wavefor m obser ved on an oscilloscope across a load is shown. A permanent magnet moving coil (PMMC) meter connected across the same load reads

1. 4V
2. 5V
3. 8V
4. 10V

Correct Option: A

PMMC will read average value Vavg

=	Area under curve
	Time period

=	[(1/2 × 10 × 10) -[5 × 2] + [8 × 5]] × 10^-3
	20 × 10^-3

= 4V