Spinning electron

Electricity and Magnetism Level 2

The above shows an electron with quantity of electricity \(e\) spinning on a circular orbit. The period of the circular motion is \(T.\) Which of the following statements is correct about the physical quantities that result from the circular motion of the electron?

a) The current intensity is \(\displaystyle \frac{e}{T}\).

b) The direction of the magnetic moment is \(+z\) direction.

c) The magnitude of the magnetic moment is \(\displaystyle \frac{\pi r^2T}{e}\).


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