Balloons and Static Electricity

Instructions

This simulation shows how a balloon and sweater can become statically charged. Drag the balloon over the sweater to charge it.
  1. Can a balloon be "negatively charged" and still have positive charges on it?
  2. Why is the charged balloon attracted to the sweater?
  3. Why is the charged balloon attracted to the neutral wall?
  4. Why is the charged balloon "more" attracted to the sweater than the wall?
Credits: PhET Interactive Simulations University of Colorado Boulder https://phet.colorado.edu