Light is an Electomagnetic wave. When I create an electromagnet by passing electricity wound around a core and keep changing the electric field, does it emit photons?Is the frequency of electromagnetic radiation equals the frequency of change in the electric field? If yes can it emit visible light if the frequency is in that range?

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Ashlynn Delacruz · Accepted Answer

Your question seems to be partly about light and photons. Light, of course, consists of photons. But any electromagnetic wave consists of photons; it&#039;s just that some photons carry very little energy (at low frequency and long wavelength) and some carry a lot of energy (at high frequency and short wavelength). When the current through an electromagnet is changing, the electromagnetic field is changing, so waves - photons - are emitted; but the emitted photons are very low frequency and certainly not visible light photons.

Is the frequency of electromagnetic radiation equals the frequency of change in the electric field?

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