← ⚛️ Physics · usually met in Std 6-10
Moving charge makes a magnetic field, and a changing magnetic field makes charge move. Nearly all the world's electricity comes out of that second sentence.
Every magnet has two poles, and they cannot be separated: cut a magnet in half and you get two smaller magnets, each with both. Like poles repel, unlike attract. The deep link is with electricity — a current through a wire makes a magnetic field around it, and winding that wire into a coil concentrates the field into an electromagnet that can be switched off, which an ordinary magnet cannot.
Faraday found the reverse: move a magnet near a coil and a current appears in the coil. That single effect is how almost every power station on Earth generates electricity, whether the turbine is turned by steam, falling water or wind. A motor is the same arrangement run backwards — current in, movement out.
Want to see it moving? Search YouTube for “Magnetism” ↗ — we send you to the search rather than to one video, because a link to one video eventually rots.
This entry was written for Star Student in our own words — it is a summary, not a source. Here is where the people who actually hold these facts keep them. Go and check.
Your own textbook ↗Balbharati publishes the textbooks free to read online. Your chapter is the thing to check first — an encyclopedia is a summary, and the syllabus is the syllabus.Last gone through: 1 October 2026 · How these entries are written
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