which option is true for the production of electromagnetic waves?\na charges at rest only\nb charges in…

which option is true for the production of electromagnetic waves?\na charges at rest only\nb charges in uniform motion only\nc accelerated or decelerated charges\nd all of the above

which option is true for the production of electromagnetic waves?\na charges at rest only\nb charges in uniform motion only\nc accelerated or decelerated charges\nd all of the above

Answer

Brief Explanations:

To determine the correct option for the production of electromagnetic waves, we analyze each choice:

  • Option a: Charges at rest produce static electric fields, not electromagnetic waves.
  • Option b: Charges in uniform motion produce constant magnetic fields (and electric fields), but no electromagnetic waves (since acceleration is zero).
  • Option c: Accelerated or decelerated charges (changing velocity) produce time - varying electric and magnetic fields, which propagate as electromagnetic waves (e.g., antennas use accelerating charges to emit radio waves).
  • Option d: Incorrect, as a and b are not valid.

Answer:

c. Accelerated or decelerated charges