Four identical large metal plates are arranged parallel to each other, with equal gaps in between. They are given charges q, 2q, 3q and 4q (counting from any one side). The outermost plates are now shorted. The charge which flows through the shorting wire is
Four identical large metal plates are arranged parallel to each other, with equal gaps in between. They are given charges q, 2q, 3q and 4q (counting from any one side). The outermost plates are now shorted. The charge which flows through the shorting wire is