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Welcome to our Physics lesson on Magnetic Force on a Current Carrying Wire. Ampere's Force, this is the first lesson of our suite of physics lessons covering the topic of Magnetic Force on a Current Carrying Wire. Ampere's Force, you can find links to the other lessons within this tutorial and access additional physics learning resources below this lesson.
From the property of interaction between electricity and magnetism discussed in the previous tutorial, it is clear that a conducting wire will not produce any magnetic field when no current flows through it. On the other hand, a static magnetic field will not produce any current If no conducting wire is placed inside the field. Therefore, a simultaneous existence of a magnetic field and electric current Is a necessity to cause an interaction between them.
The term "interaction" is nothing else but another word to express the existence of a force. We know from the previous tutorial (from the definition of magnetic induction B) that the magnetic force F produced on a conducting wire of length L when a current I flows through it, is:
This is a mixed product of vectors, which has the following corresponding scalar form:
where θ is the angle between the current carrying wire and the direction of magnetic field and I, L and B are the magnitudes of the corresponding quantities regardless their direction. This equation (either in scalar or vector form) is known as the equation of Ampere's Force.
You have reached the end of Physics lesson 16.3.1 Magnetic Force on a Current Carrying Wire. Ampere's Force. There are 5 lessons in this physics tutorial covering Magnetic Force on a Current Carrying Wire. Ampere's Force, you can access all the lessons from this tutorial below.
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