Rationalised 2023-24
Physics
180
It is defined by
2
212
2
m
m
i
I
i
i
=
=
=
= 0 707 im
(7 6)
In terms of I, the average power, denoted by P is
2
2
21
m
p
P
i R
I R
=
=
=
(7 7)
Similarly, we define the rms voltage or effective voltage by
V = 
2
m
v
 = 0