Simple bulb problem


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I have a fluorescent bulb rated at 13 Watts, however, the bulb also says it draws 180 mA of current. At 120 V wouldn't Ohm's law make the Wattage 21.6 W?
 
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Does this light work off of a ballast? If so, what is the wattage of the ballast and the "PF" (power factor) of the ballast?
 

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