help with 4b only
4) Consider the potentials Pow V = - (d) win (w[-]) 4π€ C T À Ho pow sin n (w [t − ²]) £ Ал т These are the potentials of an oscillating dipole (with dipole moment amplitude po oscillating in the direction) under certain approximations. a) Which approximations have been made to arrive at the above expressions for the potentials? b) Determine whether these potentials obey the Lorentz or Coulomb gauge. If you find that they do, explain why this might be naturally expected. If you find that they don't, explain why this may deviate from the naive expectation. [10]
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