Interactions between two conductors - Ampere's force law

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According to Ampere's rule right-hand rule for coils to induce poles with the same orientation. Since opposite poles of the magnets (and therefore the coils) attract, draw the coils together. If you mount the coils on the contrary, induce the same poles of the coils, so the coils will repel.
The Ampere force law is called Ampère discovered the law of mutual action of two linear power protékaných electrical wires, which laid the foundations of electrodynamics, or the relationship for the magnetic force acting on proudovodič in the general magnetic field.

Educational phase: motivation

 

Required aids+

  • two strips of aluminum foil
  • connecting wires
  • switch
  • battery
  • stand.

 

Experiment instructions+

E128_S001 Plug in the wires so that current flow through both the same direction.
E128_S002 Switch closes, the wires attract.
E128_S003 We combine the wires so that current flow through the two different directions.
E128_S004 Switch closes, the wires repel.
 

Explanation+

Two parallel conductors, which passes current at each other also interact via their magnetic fields. Passes through the two conductors of currents in the same direction, the wires attract each other. Wires through which currents in opposite directions repel each other.
 

Experiment video+

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Physical interpretation+

As Ampere's force law is called Ampère discovered the law of mutual action of two linear power wires protékaných electric shock. This relationship gives the power exerted by a magnetic field on the electric wire traversed by an electric shock. The orientation of the force is given by Fleming left hand rule: If we put the open palm of left hand on the wire, which current flows, so that the fingers pointing direction of the current and magnetic lines entering into the palm, the thumb indicates the direction of towing forces exerted by a magnetic field on the conductor. "

According to Ampere's rule right-hand rule for coils to induce poles with the same orientation. Since opposite poles of the magnets (and therefore the coils) attract, draw the coils together. If you mount the coils on the contrary, induce the same poles of the coils, so the coils will repel. <br /> The Ampere force law is called Ampère discovered the law of mutual action of two linear power protékaných electrical wires, which laid the foundations of electrodynamics, or the relationship for the magnetic force acting on proudovodič in the general magnetic field.
 

Note+

Analogous to this experiment is defined by one of the seven SI base units, the unit power amp: Two infinitely long parallel straight conductors of negligible cross section placed in a vacuum in the relative distance of one meter runs steady current of one ampere when the power wires attract 2.10 -7 N per meter of length.
 
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This experiment has been added 14.4.2012 by Jan Krejčí and since then have 12147 visits.
 
3.6.2014 21:44 © Krejčí Jan
 
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