a. What is the percentage increase in relative efficiency of the device of Fig. 1.52 if th...

a. What is the percentage increase in relative efficiency of the device of Fig. 1.52 if the peak current is increased from 5 mA to 10 mA?

b. Repeat part (a) for 30 mA to 35 mA (the same increase in current).

c. Compare the percentage increase from parts (a) and (b). At what point on the curve would you say there is little to be gained by further increasing the peak current?

FIG. 1.52 Hewlett-Packard subminiature high-efficiency red solid-state lamp: