# Alternating quantities

### Explanation of question 5

A sinusoidal voltage has an r.m.s. value of 10V. Its peak-to-peak value will be

1. 3.54V
2. 7.07V
3. 14.14V
4. 28.28 V

The answer is :- 4 Vpeak = Vrms x = 10 x 1.414 = 14.14V

Peak to peak voltage is twice the peak voltage i.e. 28.28V

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