Question

Transformation of the electric and magnetic fields between different frames of reference

Answer 1

Answer:

There is first of all an electrostatic repulsive force between the two like-sign charges,

F=Q1Q24πϵ0r2

That's it in the frame where the charges are at rest. In a frame that is moving by speed v perpendicular to the charges' separation, both charges look γ times heavier because they're moving. The same electrostatic force will therefore cause a lower acceleration, which is OK - it may be interpreted as time dilation. There will also be a magnetic field v×E/c2 in that moving