two charges -0.2microfarad and -0.8microfarad are held 30milimetres apart in air. A test charge of 1picofarad is moved along the line joining the two charges. Where will it experience zero resultant force
two charges -0.2microfarad and -0.8microfarad are held 30milimetres apart in air. A test charge of 1picofarad is moved along the line joining the two charges. Where will it experience zero resultant force