Magnetism and Matter Class 12 – NCERT Concepts, Magnetic Materials, Hysteresis & PYQs
Here are important pointers regarding magnetism, drawing from the provided sources and our conversation history, offering explanations and insights to enhance your understanding: I. Fundamental Connection between Electricity and Magnetism The intimate relationship between electricity and magnetism was discovered relatively recently, in 1820, by Danish physicist Hans Christian Oersted [previously]. Oersted observed that an electric current in a straight wire caused a deflection in a nearby magnetic compass needle , demonstrating that moving charges or electric currents produce a magnetic field in the surrounding space [previously, 1, 2]. This was a pivotal discovery. This led to intense experimentation by scientists like Ampere, Biot, and Savart. James Maxwell unified the laws of electricity and magnetism in 1864 , realizing that light itself was made of electromagnetic waves [previously]. II. The Magnetic Field (B) Similar to how static charges produce an electric fie...