The force per unit length between two long parallel wires is:

  1. FL = mu0I1I2d
  2. FL = mu0I1I22pi d^2
  3. FL = I1I2d
  4. FL = mu0I1I22pi d
Answer

D) FL = mu0I1I22pi d

Used to define the ampere historically. SLO P-09-E-37 · Understanding

Physics MCQ · More Magnetism and Electromagnetic Induction MCQs · Practise