moving a coil of wire in the magnetic field generates electrical current
ballistic_galvanometer is moving_coil_galvanometer. electrons has electrical_charge field_coil is coil. electrical_wire is electrical_conductor. electrical_generator_geothermal is not generator. electrical_wire is not electrical_conductor. magnetic_flux is magnetization. verticil is coil. field_coil is not coil. electrical_generator_geothermal is generator.