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The Speed Of Electricity Is More Complicated Than You Think - Here's Why
BGR • • technology
Key Points:
- Electricity does not travel down a wire at the speed of light; instead, there are three different speeds involved: individual electron velocity, electron drift velocity, and electromagnetic signal velocity.
- Individual electrons move chaotically at very high speeds but their net movement, or drift velocity, is extremely slow, typically only a few feet per hour.
- The rapid transmission of energy and information in a circuit is due to electromagnetic fields propagating near the speed of light, causing electrons to move almost simultaneously throughout the conductor.
- Electromagnetic signal velocity, which carries energy and data, travels slightly slower than the speed of light and is responsible for the near-instant operation of devices like phone chargers.
- Understanding these distinct speeds helps clarify how circuits function, impacts network data transmission rates, and informs research on energy storage and battery performance.
