A GE SoftWhite Longlife lightbulb is rated as follows:
The resistance of the filament of the bulb, measured with a standard multimeter, is 16.7 ?. When the bulb is connected into a circuit and is operating at the rated values given above, determine
a. The resistance of the filament.
b. The efficiency of the bulb.
a)
b)
Efficiency is defined as the ratio of the useful power dissipated by or supplied by the load to the total power supplied by the source. In this case, the useful power supplied by the load is the optical power.
You might also like to view...
What is the main disadvantage of microwave transmissions?
A. refraction interference from ionosphere layer of atmosphere B. travels only in direct, straight lines C. signals are only satisfactory over long range D. high cost of transmission equipment
The most common fan used for moving air across outdoor condenser coils in residential air conditioning is:
A) Forward-curved centrifugal. B) Backward-curved centrifugal. C) Vane axial. D) Propeller.
The “don’t be a tattle-tale” attitude is only one of the problems that works against whistle-blowing. Retribution is when: