2004 2003 2002 2001 2000
  (Sub-Topics) Screening (%) Mains(%)
  1. Magnetic field 3.57 0
  2. Magnetic force & torque 3.57
  3. Flux & Magnetic induction 3.57 3.33
  4. Magnetic properties. 0 0
  Total 10.71 6.66