A full wave rectifier circuit along with the input and output voltages is shown in the figure
What is the contribution to output voltage from diode 2, if in first half cycle diode 1 is in forward biased condition
In the positive half cycle of input ac signal diode D1 is forward biased and D2 is reverse biased so in the output voltage signal, A and C are due to D1. In negative half cycle of Input ac signal D2 conducts, hence output signals B and D are due to D2.