In Europe the standard voltage in homes is 220V instead of the 120V used in the United States. Therefore a 100W European bulb would be intended for use with a 220V potential difference.
The resistance of the bulb is a property of the materials and dimensions of the bulb itself. so the ...
It investigates how the 100W European bulb works in the US 120 V standard voltage. The solution is detailed and has a '5/5' rating.