A light bulb requires electrical energy to produce light.
Light is a part of the electromagnetic spectrum.
A bulb requires electrical energy to produce part of the electromagnetic spectrum.
A bulb requires electrical energy to produce part of what kind of spectrum?
Options:
[A] an electron microscope
[B] magnetic
[C] autism spectrum
[D] electromagnetic
[E] rain or sun shine
[F] direct energy
[G] field
[H] hydrogen and oxygen