Q.

The diode in a half wave rectifier has a forward resistance RF. The voltage is Vmsinωt and the load resistance is RL. The DC current is given by                    

A. vm/√2rl
B. vm/(rf+rl)π
C. 2vm/√π
D. vm/rl
Answer» B. vm/(rf+rl)π
Explanation: for a half wave rectifier, the idc=iavg=im/π
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