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Amperes Law


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and a law is demonstrated with the help of an induction coil consisting of a
flexible hose carrying many turns of wire it's wrapped around a conductor when its current is turned on and induced voltage pulses observed then the current is turned off note the long time it takes for the galvanometer to equally bright now the current is turned back on of after the galvanometer has equilibrated again with the current held constant at 100 lamps the flexible hose is moved around it shown that the line integral of the magnetic field is independent of the past currents turned off again the we In the next experiment the flexible hose wraps around the current carrying conductor exactly twice when the current is turned
on the voltage pulse is twice as
large as in the 1st experiment
but In the 3rd experiment the flexible hose is held in such a way that it does not wrap around the current carrying
conductors switching the current on or off does not lead to an observable voltage pulse finally the flexible
hose wraps around to equal currents flowing in different directions so that the net current through the loop is 0 again you know in used voltage pulse is observed when the current is turned on and all
here the flexible hose is used to
measure the line integral of the magnetic field within and
outside a fairly short solenoid we have with the and the same thing the
contribution to the line integral from the outside is surprisingly small
here the line integral is measured for a permanent magnet when the flexible hose approaches and also when it subsequently removed Ch
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Computer animation


Formal Metadata

Title Amperes Law
Alternative Title Magnetischer Spannungsmesser
Title of Series The Physics Experiments of Robert Wichard Pohl (1884 - 1976)
Number of Parts 62
Author Lüders, Klaus
Pohl, Robert Otto
Beuermann, Gustav
Samwer, Konrad
Contributors Stickan, Walter (Redaktion)
Lechner, Kuno (Kamera)
Gerstenberg, Thomas (Ton)
Yousefpour, Abbas (Schnitt)
License CC Attribution - NoDerivatives 3.0 Germany:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
DOI 10.3203/IWF/C-14870eng
IWF Signature C 14870
Publisher IWF (Göttingen)
Release Date 2004
Language English
Producer IWF (Göttingen)
Production Year 2003

Technical Metadata

IWF Technical Data Video-Clip ; F, 3 min 27 sec

Content Metadata

Subject Area Physics
Abstract A long induction coil wound on a flexible hose is used to explore the magnetic field near current carrying conductors and also near a permanent magnet.
Keywords Electric currents
magnetic field
line integral of the magnetic field
Amperes Law
permanent magnets

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