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Show on a big screenA current makes a magnetic field. This track maps that field and uses it.
What this track covers
It is Chapter 12 of your Class 10 Science book.
- The invisible shape around a wire: a field in rings.
- Drawing the shape: field lines and what they tell you.
- A magnet you can switch: a coil magnet.
- The field pushes back: Fleming's left-hand rule.
- Your house has a circuit: live, neutral, earth and a fuse.
- Two kinds of current: direct and alternating.
- Motors: a coil, a field and a split ring.
- The field of a loop: one turn, then a coil.
- Induction and the generator: a moving magnet makes current.
- Colours and ratings of house wires: the book's colours and circuits.
One rule before anything else
Every lab here is a drawing on a screen. Mains current is the supply in your home's sockets. Mains current can kill. Only a trained electrician works on real wiring.