The variation with time 
of the output 
of an alternating voltage supply of frequency 
is shown in the graph below.
Use the graph above to state
the time 
,
the peak value 
of the voltage,
the root-mean-square voltage 
,
the mean voltage 
.
The alternating supply is connected in series with a resistor of resistance 
. Calculate the mean power dissipated in the resistor.
.
.
.
.
