Magnetic Fields Around Current-Carrying Wires
The presence of electric current in a wire generates a magnetic field around it. This phenomenon is fundamental to understanding electromagnetism.
Definition: A magnetic field is a region around a magnet or current-carrying conductor where magnetic forces can be detected.
The strength of the magnetic field B created by a current-carrying wire is given by the formula:
Highlight: Manyetik alan Formülü: B = k · 2I/d
Where:
- B is the magnetic field strength measuredinTesla
- k is a constant
- I is the current
- d is the distance from the wire
Example: For two parallel wires carrying currents in opposite directions, the magnetic field at a point between them can be calculated by superposition of their individual fields.
The direction of the magnetic field lines around a current-carrying wire follows the right-hand rule:
Vocabulary: The right-hand rule states that if you point your thumb in the direction of the current, your fingers will curl in the direction of the magnetic field lines.
In certain configurations, the net magnetic field can be zero:
Highlight: Bileşke manyetik alan nasıl sıfır olur: When two or more magnetic fields cancel each other out at specific points or regions.
