The magnetic field lines around a long straight current-carrying wire are:

  1. radial lines
  2. spirals
  3. straight lines parallel to the wire
  4. concentric circles centred on the wire
Answer

D) concentric circles centred on the wire

In planes perpendicular to the wire. SLO P-09-E-35 · Application

Physics MCQ · More Magnetism and Electromagnetic Induction MCQs · Practise