In Figure an electric dipole swings from an initial orientation i (?_i = 20.0^o) to a final orientation f (?_i = 20.0^o) in a uniform external electric field E. The electric dipole moment is 1.60 x 10^-21 C ? m; the field magnitude is 3.00 x 10⁶ N/C. What is the change in the dipole's potential energy?

Transcribed Image Text:

E.