Question

what is the mechanism in dynamo

Answer 1

hola amigo!

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the dynamo theory proposes a mechanism by which a celestial body such as a star or any planet generates a magnetic field around it.

Induction or creation of magnetic field is described by the induction equation:

{\displaystyle {\frac {\partial \mathbf {B} }{\partial t}}=\eta \nabla ^{2}\mathbf {B} +\nabla \times (\mathbf {u} \times \mathbf {B} )}

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sorry if the equation doesn't appear

i hope it helps  :)