What are the different types of electric spacecraft propulsion?

Electric propulsion types include: Electrothermal (resistojets, arcjets) - electrically heat propellant, Isp 500-800s, simple but lower efficiency; Electrostatic (ion, Hall effect) - accelerate ionized propellant with electric fields, Isp 1500-5000s, high efficiency, low thrust; Electromagnetic (pulsed plasma, magnetoplasmadynamic) - use magnetic fields to accelerate plasma, high power capability. Selection factors: Required delta-v, Available power, Thrust requirements, and Propellant choice. Hall thrusters (Starlink, commercial satellites) offer good balance of Isp (~1500s) and thrust. Ion engines (Deep Space 1, Dawn) maximize Isp for deep space. Power processing units and propellant management are critical subsystems.