PHYS 1112 - Introductory Physics II
Lesson 14 - Inductance

Study Assignment:

Study: Chapter 23, Sections 23.7,  23.9

Lesson notes:

In the last lesson, we learned that an emf is produced in a circuit if the magnetic flux through the circuit changes with time. Since the magnetic flux is proportional to the magnitude of the magnetic field which is in turn proportional to the current establishing the magnetic field, any changing current in a circuit will produce an emf in the circuit which by Lenz's law will oppose the change that produced it. This phenomenon is called self-inductance and is present in any circuit when the current in the circuit is changing.

Objectives:

1. Know and understand the definitions of self-inductance.

2. Understand that energy in a inductor is stored in the magnetic field and be able to calculate it.

Vocabulary:

self-induced emf
henry

Homework:

TP: 23-39, 23-40, 23-43, 23-50

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Last update: August 07, 2007