A rod slides along rails in a field, and the induced current flows. By Lenz's law, the magnetic force on the rod:

  1. is zero
  2. helps its motion
  3. acts vertically upward always
  4. opposes its motion
Answer

D) opposes its motion

Work must be done to keep it moving. SLO P-09-E-42 · Application

Physics MCQ · More Magnetism and Electromagnetic Induction MCQs · Practise