Why magnetic field produces? 5 marks
Physics
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Magnetic fields are produced by moving electric charges (electric currents) and by the intrinsic magnetic moments of elementary particles.
- Moving Charges: Any flow of electric charge, such as current in a wire or electrons orbiting an atomic nucleus, generates a magnetic field in the surrounding space. This is described by the Biot-Savart Law and Ampere's Law.
- Intrinsic Magnetic Moments: Elementary particles like electrons have an inherent property called spin, which gives them a tiny magnetic dipole moment. In materials like ferromagnets, these atomic magnetic moments align, creating a macroscopic magnetic field.
- Electromagnetism: Magnetic fields are fundamentally linked to electric fields, as described by Maxwell's equations. A changing electric field can produce a magnetic field, and a changing magnetic field can produce an electric field.
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