Alternating current (a.c.) is converted into direct current (d.c.) using a full-wave rectification circuit. Part of the diagram of this circuit is shown in the figure below.
Complete the circuit in the figure above by adding the necessary components in the gaps.
On the figure above mark with a + the positive output terminal of the rectifier.
The output voltage 
of an a.c. power supply varies sinusoidally with time 
as shown in the graph below.
Determine the equation for in terms of , where is in volts and is in seconds.
The supply is connected to a 
resistor. Calculate the mean power dissipated in the resistor.
.
