- Classical Mechanics
Electric field Energy: Energy due to a dipole outside sphere
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Consider an imaginary sphere of radius a centered on a dipole of moment p. Show that the electric energy associated with the region of space outside the sphere is:
w= (p^2/12*pi*epsilon sub 0*a^3)
by integrating the energy density from r=a to r=infinity.
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Energy stored outside a spherical region with a dipole of momenta P is at its centre.