electric fields between charges

vector field pole design simple south iron closed two magnets electric current magnetic force components magnet magnetism characteristics particles electrometer magnetic conductor structure attraction perpendicular magnetosphere magnetometer process surrounding charges sinusoidal volt sine repelled relative minus line concept icon teaching red electrostatic power physical element energy educational shape learn electrical technology positive electric charge direction lines vector physics negative science education demonstration electromagnetic coulomb diagram electricity graphic magnitude parallel two isolated dipole electron symbol blue field intensity homogeneous plus