Imagine that you're an electron.
You are always at rest in your inertial frame so that you do not "feel" the [itex]\mathbf{v} \times \mathbf{B}[/itex] term of the Lorentz force.
Thus, from your perspective, you only ever "feel" an electric field.
Magnetic fields only affect other electrons!
You are always at rest in your inertial frame so that you do not "feel" the [itex]\mathbf{v} \times \mathbf{B}[/itex] term of the Lorentz force.
Thus, from your perspective, you only ever "feel" an electric field.
Magnetic fields only affect other electrons!