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Deduce the expression for the magnetic f...

Deduce the expression for the magnetic field induction at the centre of a circular electron orbit of radius r, and angular velocity of orbiting electron `omega`.

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The electron moving on a circular orbit acts like a current loop. Magnetic field induction in magnitude, at the centre of the current loop is
`B=(mu_0)/(4pi i)(2pir)/(r)=(mu_02pi)/(4pir)(e/T)=(mu_0)/(2r)((e)/(2pi//omega))=(mu_0eomega)/(4pir)`
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