A negatively charged rod is held close to an uncharged metal ball on an insulating stand. The ball will
Answer Details
When a negatively charged rod is held close to an uncharged metal ball on an insulating stand, the electrons in the metal ball will be repelled by the negative charges in the rod, and will move as far away as possible from the rod. This movement of electrons will result in a net positive charge on the side of the ball nearest to the rod, and a net negative charge on the opposite side. Therefore, the ball will have an excess of positive charges on the side nearest the rod.
So, the correct option is: the ball will have an excess of positively charged on the side nearest the rod.