Ampere's law

noun

Definition of Ampere's law

  1. :  either of two laws in electromagnetism: (1) :  the magnetic field resulting from an electric current in a circuit element is at any point perpendicular to the plane passing through the circuit element and the point, appears clockwise to an observer looking along the element in the direction of the current flow, is directly proportional to the product of the current multiplied by the length of the component of the element perpendicular to the line joining it to the point, and is inversely proportional to the square of the length of this line; or (2) :  the work done in carrying a magnetic pole around any closed path is proportional to the electric current flowing through the area bounded by the closed path

There's more!

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!
Already a subscriber? Log in.

First Known Use of ampere's law

1846


Seen and Heard

What made you want to look up Ampere's law? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to fight against or to call in question

Get Word of the Day daily email!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!