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## Main Question or Discussion Point

Could someone show me a real world example of how to calculate the Magnetic and Electric Field around the Sun or a Planet.

[tex]\vec{B} = \nabla * \vec{A} = (B_x, B_y,B_z)[/tex]

[tex]\vec{E} = -\nabla*\phi-\frac{\partial \vec{A}}{\partial t} = (E_x,E_y,E_z)[/tex]

[tex]\vec{B} = \nabla * \vec{A} = (B_x, B_y,B_z)[/tex]

[tex]\vec{E} = -\nabla*\phi-\frac{\partial \vec{A}}{\partial t} = (E_x,E_y,E_z)[/tex]