To investigate the magnetic force between two parallel current-carrying wires and determine the magnetic permeability of free space, µo.
Today: - Force between two parallel, infinite wire currents - Ampere's Law - Solenoids. DEMO: We have seen that moving charges or currents are the source of magnetism. This can be readily demonstrated by placing compass needles near a wire.
19-5 The Magnetic Force on a Current-Carrying Wire. Starting with the magnetic force on a moving charge, , let’s derive the.
Parallel wires carrying current produce significant magnetic fields, which in turn produce significant forces on currents. Learning Objective. Express the magnetic force felt by a pair of wires in a form of an equation.
Current electricity and magnetism (2). Contents for this page. Related topics.
Comparison to an electric dipole. Slide28. Force between two parallel wires.
This force between two current carrying wires gives rise to the fundamental definition of the Ampère: If two long parallel wires 1 m apart each carry a current of 1 A, then the force per unit length on each wire is 2 x 10- 7 N/m.
2 0 –4 Force on an Electric Charge Moving in a Magnetic Field. 2 0 –5 Magnetic Field Due to a Long Straight Wire. 2 0 –6 Force between Two Parallel Wires. 2 0 –7 Solenoids and Electromagnets.
Parallel wires carrying currents will exert forces on each other. Each wire produces a magnetic field, which influences the other wire. When the currents in both wires flow in the same direction, then the force is attractive.
How does magnetism work and what is its relation to the electric force? In this chapter I will attempt to explain the relationship. First let’s look at some simple electrical experiments involving the magnetic force between current carrying wires