Question

In an a.c circuit, peak value of voltage is 423 volts, its effective voltage is ______.

Options

• 400 V

• 323 V

• 300 V

• 340 V

Answer 1

In an a.c circuit, peak value of voltage is 423 volts, its effective voltage is 300 V.

Explanation:

As we know,

The effective voltage is ${\displaystyle {\text{V}}_{\text{rms}}=\frac{{\text{V}}_0}{\sqrt{2}}}$

${\displaystyle {\text{V}}_{\text{rms}}=\frac{423}{\sqrt{2}}=300}$V