(Solved): A rubber rod is rubbed on a cloth and acquires a positive charge at one end. That end is brought nea ...

A rubber rod is rubbed on a cloth and acquires a positive charge at one end. That end is brought near one end of an uncharged long metal rod suspended from an insulating string, without touching it. What happens? The near end of the metal rod is repelled by the rubber rod. The metal rod glows red hot and then explodes. The near end of the metal rod is attracted to the rubber rod. Nothing happens.