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Physics LibreTexts

7.1: Introduction

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In Chapter 6 we showed that when an electric current is situated in an external magnetic field it experiences a force at right angles to both the current and the field. Indeed we used this to define both the magnitude and direction of the magnetic field. The magnetic field is defined in magnitude and direction such that the force per unit length \textbf{F}^\prime on the current is given by

\textbf{F}^\prime = \textbf{I} \times \textbf{B}.


This page titled 7.1: Introduction is shared under a CC BY-NC 4.0 license and was authored, remixed, and/or curated by Jeremy Tatum via source content that was edited to the style and standards of the LibreTexts platform.

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