Electron beam deflection. In a cathode ray tube, where an electron beam passes through a controllable magnetic field, the trajectory of the beam is curved by the field. In some materials, such as pure nickel, a magnetic field causes the material to shrink along the direction of the field. Some insulators, such as quartz, change their shape when subject to an electric field. Electro-thermal, linear expansion.
All materials expand when heated.
Electro-thermal, differential expansion. Bimetal, heated electrically, bends. Electric heat boils water and the resulting steam, under pressure, does mechanical work. Electro-thermal, electron beam. Electrical heat causes electrons to boil out of a solid and electrostatic force accellerates the electrons.