Superposition Principle 电场强度叠加原理 In general: net s e +2+b2+ or het s The net field at a location in space is the vector sum of the fields contributed by all charged particles at other locationsSuperposition Principle 电场强度叠加原理      Enet = E1 + E2 + E3 + In general: =  i E Ei   net or: The net field at a location in space is the vector sum of the fields contributed by all charged particles at other locations