What powers a light bulb?
structure and function The tungsten filament photosynthetic pigments? Unplugging a lamp heat production heat is produced Unscrewing a light bulb The flow of electrical current
A B C D E F G H
With switch closed, electricity flows through wires, switch and bulb, to light up the bulb.
The flow of electrical current powers a light bulb.
What powers a light bulb? (A) structure and function (B) The tungsten filament (C) photosynthetic pigments? (D) Unplugging a lamp (E) heat production (F) heat is produced (G) Unscrewing a light bulb (H) The flow of electrical current