We know why a charged rod can deflect water droplets which isbecause of the positive side of water molecule attracting to thenegative side of the rod and vice versa. While explanation is trueto some extent, it is not entirely. The question is : Can youfigure out what is missing (what is another reason for itsdeflection besides the water molecule and rod's charges? Hint wehave is: Water in the pipe is not only h20