An observer `A` and `a` charge `Q` are fixed in a stationary frame `F_(1)`. An observer `B` is fixed in a frame `F_(2)` which is moving with respect to `F_(1)`

Options

A. Both A and B will observe electric fields
B. Both A and B will observe magnetic fields
C. Neither A nor B will observe magnetic fields
D. B will observe a magnetic field, but A will no

Answer

A,C

Explanation

Stationary charges produces only electric field. Moving charges produces both electric and magnetic fields.