The field near the centre of a flat coil is stronger than that of a straight wire with the same current because:

  1. the current is larger in a coil
  2. the coil has more resistance
  3. coils are magnetic
  4. the fields of all parts of the loop add at the centre
Answer

D) the fields of all parts of the loop add at the centre

Contributions reinforce. SLO P-09-E-35 · Application

Physics MCQ · More Magnetism and Electromagnetic Induction MCQs · Practise