In this lesson, we will learn how to use Ampere's law to relate the current through a closed conducting path to the magnetic field produced by that current.

Q1:

The following figure shows a rectangular current loop that carries a current I.

Evaluate ο β B I d in terms of π 0 and I for path A.

Evaluate ο β B I d in terms of π 0 and I for path B.

Evaluate ο β B I d in terms of π 0 and I for path C.

Evaluate ο β B I d in terms of π 0 and I for path D.

Q2:

The coil whose lengthwise cross section is shown in the accompanying figure carries a current I and has N evenly spaced turns distributed along the length l.