Assertion: light bulb's ballast | /r/CapableOf | limit the current
Facets:
value: to the operating current
type: OTHER
Source sentences:
text: After the arc is struck, the internal resistance of the lamp drops to a low level, and the ballast limits the current to the operating current.
text: A CFL’s ballast helps "kick start" the CFL and then regulates the current once the electricity starts flowing.
text: The ballast provides the initial surge and then later limits the current.