First slide

Alternating current and voltage

Question

The maximum value of AC voltage in u circuit is 707V. Its r.m.s. value is

Moderate

A

70.7 V
B

100 V
C

500 V
D

707 V

Solution

$E_{rms} = \frac{E_{0}}{\sqrt{2}} = \frac{707}{1 .41} = 500 V$

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