Four diodes are used in a bridge rectifier circuit to produce rectification of a sinusoidal a.c. input voltage 
. The figure below shows part of the circuit, but three of the diodes are missing.
The p.d. across the load resistor R is the output p.d. 
of the bridge rectifier.
State the name of the type of rectification produced by a bridge rectifier.
Complete the figure above by drawing the three missing diodes, correctly connected.
On the figure above, draw an arrow to indicate the direction of the current in resistor R.
has amplitude 
and period 
. The graph below shows the variation with time 
of .
On the graph below, sketch the variation of with between 
and 
.
The power dissipated in the resistor is 
. On the graph below, sketch the variation of with between and .
