Question

An electron of charge 'e' is revolving in a fixed orbit of radius 'r' with frequency 'f'. Its magnetic dipole moment is ____________.

विकल्प

• `pi^2 "efr"`

• `pi "efr"^2`

• `pi "efr"`

• `pi^2 "efr"^2`

Answer 1

An electron of charge 'e' is revolving in a fixed orbit of radius 'r' with frequency 'f'. Its magnetic dipole moment is `pi "efr"^2`.

Explanation:

Magnetic dipole moment M = IA.

For a revolving electron I = ef and A = `pi"r"^2`

`therefore "M" = pi"efr"^2`