Context: Incandescent lamps are nearly pure resistive loads with a power factor of 1. This means the actual power consumed (in watts) and the apparent power (in volt-amperes) are equal. Incandescent light bulbs are usually marketed according to the electrical power consumed. This is measured in watts and depends mainly on the resistance of the filament, which in turn depends mainly on the filament's length, thickness, and material. For two bulbs of the same voltage, type, color, and clarity, the higher-powered bulb gives more light.

Question: What does a power factor of 1 mean?
Answer: the actual power consumed (in watts) and the apparent power (in volt-amperes) are equal

Question: What principally determines the wattage of an incandescent bulb?
Answer: the resistance of the filament

Question: What determines the resistance of the filament?
Answer: the filament's length, thickness, and material

Question: How close do incandescent lamps come to pure resistive loads?
Answer: Incandescent lamps are nearly pure resistive loads

Question: All other things being equal, how does wattage affect light emitted?
Answer: the higher-powered bulb gives more light

Question: What type of lamp has a power factor of 2?
Answer: Unanswerable

Question: What does the power factor of 2 mean?
Answer: Unanswerable

Question: How are incandescent light typically not marketed?
Answer: Unanswerable

Question: What does not principally determine the wattage of an incandescent bulb?
Answer: Unanswerable

Question: How does wattage not affect light emitted?
Answer: Unanswerable