What total power is essential to run this led light source

Reference no: EM13664587

An individual white LED (light-emitting diode) has an efficiency of 20% and uses 1.0 W of electric power.

a) How many LEDs should be combined into one light source to give a total of 1.6 W of visible-light output (comparable to the light output of a 40 W incandescent bulb)?

b) What total power is essential to run this LED light source?

Reference no: EM13664587

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