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Magnetism

The direction of the magnetic force on a positive charge

Version 1 (right hand rule): point fingers of your right hand in the direction of $\vec v$ and curl them (through the smaller angle) toward $\vec B$. Your upright thumb shows the c ...

Electrostatic

Electric force between charged particles

According to Coulomb's law, the magnitude of attractive or repulsive electric force between two charged particles $q_1$ and $q_2$ is proportional to the product of magnitude of charges and inve ...

Magnetism

Drawing the field lines

To draw the magnetic field lines around a magnet or other magnetic objects, one can use Read More