AP EAMCET Medical 24 Apr 2019 Shift 1 Paper

Three identical charges each of magnitude 3 µC are placed at the comers of a right angled triangle ABC whose base BC and height BA are 3 cm and 4 cm respectively. Forces on the charge at right angled comer B due to charges at A and C are F1 and F2 respectively. The angle between their resultant force and F2 is