An electric dipole of moment c-m rotates in vacuum with a constant angular velocity of rad/sec. about an axis passing through it's mid point and perpendicular to it's own axis. What is the power radiated by this dipole?
Take the electric permitivity of free space and speed of light in vacuum to be equal to
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The power radiated by an electric dipole of moment p moving with acceleration w is P = 6 π ϵ 0 c 3 p ¨ 2 = 6 π ϵ 0 c 3 p 2 ω 4 .
Here ϵ 0 is the electric permitivity of free space , c is the speed of light in vacuum, ω is the angular velocity of the dipole.
Substituting values, we get P ≈ 1 3 2 . 6 2 9 .