CAPE Physics Unit 2 · 2010 · Paper 1 · Question Q20

A sinusoidal signal has a peak voltage of 5.0\text{ V}. What is the r.m.s value of this signal?

1. (A)2.50\text{ V}
2. (B)3.54\text{ V}
3. (C)6.25\text{ V}
4. (D)7.07\text{ V}