kids encyclopedia robot

Ballast facts for kids

Kids Encyclopedia Facts

A Ballast is a large resistor that regulates the amount of electrical current in a circuit. Most ballasts are used for fluorescent lamps to regulate the current thru it, which might rise to a dangerous level and burn it out.

Ballast is also crushed stone used in railway tracks. See ballast tamper.


Images for kids

See also

Kids robot.svg In Spanish: Lastre para niños

kids search engine
Ballast Facts for Kids. Kiddle Encyclopedia.