{{ /magnetic_field_lines_around_a_straight_conductor.png?500 }} 

[[/Iron filings]] around a wire with current ("Magnetic whirls around the sending wire"). The wire is positioned perpendicularly to the page.

<box 50% round #aaffaa #aaffaa|magnetic_field_lines_around_a_straight_conductor.png>
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You can use this image freely (public domain), but please give the following credits:
\\ \\ 
Original source: [[https://archive.org/details/popularsciencemo561900newy|Popular Science Montly, Vol. 56, 1899-1900]]</box>

//The file was copied from Wikimedia Commons: http://commons.wikimedia.org/wiki/File:PSM_V56_D0072_Magnetic_whirls_around_the_sending_wire.png

{{tag>Files Magnetic_field Magnetic_field_lines}}