James help

This page lists questions and answers that were posted by visitors named James help.

Questions

The following questions were asked by visitors named James help.

A square loop of side "a" carries current "I". It creates a magnetic field "B-square" at its center. The same loop is then reshaped into a circle, which lowers the magnetic field "B-circle" at the center. What is the ratio B-square/B-circle?
11 years ago

Answers

The following answers were posted by visitors named James help.