Three charges +q,+q and +q are placed at the corners of an equilateral triangle of side 'a'. The resultant electric force on a charge +q placed at the centre of the triangle is :
Three charges +q,-q,-q are placed at the corner of equilateral triangle of side 'a'. The resultant force on a charge+q placed at the centre of the triangle is
Three charges each equal to 10−9C are placed at the corners of equilateral triangle of side 1 m. The force on one of the charges is: