Light Emitting Diode
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Key Stage 4
Meaning
A light emitting diode (LED) is an electrical component which emits light when electricity passes through in one direction and prevents electricity from going in the reverse direction.
About Light Emitting Diodes
- LEDs have a low resistance in one direction and emit light but a very high resistance in the reverse direction and do not emit light.
- LEDs can be used to change an alternating current into a direct current.