Square toroid

A toroid with a square cross section 3.2\(\textrm{ cm}\times\)3.2\(\textrm{ cm}\) has an inner radius of 21\(\textrm{ cm}\). It is wound with 357 turns of wire, and it carries a current of 2.0\(\textrm{ A}\).

Question Text

What is the strength of the magnetic field at the centre of the square cross section?

Answer Section

Attribution

Problem is from the OpenStax University Physics Volume 2 textbook, licensed under the CC-BY 4.0 license.