Ampère's circuital law
| Electromagnetism |
|---|
|
In classical electromagnetism, Ampère's circuital law, often simply called Ampère's law, and sometimes Oersted's law,[1] relates the circulation of a magnetic field around a closed loop to the electric current passing through that loop.
The law was inspired by Hans Christian Ørsted’s 1820 discovery that an electric current generates a magnetic field. This finding prompted theoretical and experimental work by André-Marie Ampère and others, eventually leading to the formulation of the law in its modern form.
James Clerk Maxwell published the law in 1855. In 1865, he generalized the law to account for time-varying electric currents by introducing the displacement current term. The resulting equation, often called the Ampère–Maxwell law,[2][3][4] is one of Maxwell's equations that form the foundation of classical electromagnetism.
- ^ Ltd, Palgrave Macmillan (2016-04-30). "Ampère's laws". Dictionary of Physics. Springer. ISBN 978-1-349-66022-3.
- ^ Fleisch, Daniel (2008). A Student's Guide to Maxwell's Equations. Cambridge University Press. p. 83. ISBN 9781139468473.
- ^ Garg, Anupam (2012). Classical Electromagnetism in a Nutshell. Princeton University Press. p. 125. ISBN 9780691130187.
- ^ Katz, Debora M. (2016). Physics for Scientists and Engineers: Foundations and Connections, Extended Version. Cengage Learning. p. 1093. ISBN 9781337364300.