Theorists · Ages 16–18· λ = 470 nm

Electricity and Magnetism

Paint electric fields around charges, measure Ohm's law on a bench, and push a magnet through a coil to make electricity out of motion, just as Faraday did in 1831.

3 lessons 38 min 190 XP

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Lessons

1⚡Charges and electric fieldsLike charges repel, opposites attract, and every charge fills space with a field.13 min65 XP
2🔌Current, voltage and resistanceVoltage pushes, resistance resists, current flows: $V = I R$ .12 min60 XP
3🌀Electromagnetic inductionA changing magnetic field creates a voltage. That's how almost all the world's electricity is made.13 min65 XP