IB Physics Work Done in Moving a Charge

A tutorial sheet on the HL topic of fields.

  1. A charge +Q is fixed at rest. Find the work done in moving a charge -q from a distance d1 to a distance d2 along the line joining the charges.
  2. Two charges -q are at rest an infinite distance apart. Find the work done in moving each charge inwards along the line joining the charges so they are finally a distance d apart.