question_answer

The diode used in the circuit shown in the figure has a constant voltage drop at 0.5 V at all currents and a maximum power rating of 100 milli-watts. What should be the value of the resistor R, connected in series and with diode and obtaining maximum current?

A)  5 \[\Omega \]                  

B)         5.6 \[\Omega \]

C)  6.76 \[\Omega \]           

D)         20 \[\Omega \]