Electromagnetism -- What do charges have to do to create EM waves?

[bbbbb]

Homework Statement

electromagnetic waves are produced by electric charges that change........in some way.

Relevant Equations

None required

I am not sure, but I think the answer is between acceleration and velocity.

 

[jbriggs444]

Is there a question here?

 

[bbbbb]

Yes is the answer acceleration or velocity.

 

[jbriggs444]

Yes is the answer acceleration or velocity.

But what is the question?