Which one of the following will not generate electromagnetic waves or pulses? (A) an alternating current (B) an accelerating electron (C) a proton in simple harmonic motion (D) a direct current (E) charged particles traveling in a circular path in a mass spectrometer

The correct Option is D

Explanation:

Direct current do not generate electromagnetic waves because it does not have the attributes of electromagnetic wave especially the fact that every electromagnetic wave do alternate with time causing wave to be propagated but a direction current do not alternate with time