Here's why:
* Light travels at the fastest speed possible in the universe, approximately 299,792,458 meters per second. This is a fundamental constant.
* Electricity in a conductor doesn't travel as a single, instantaneous wave. Instead, it's a flow of charged particles (electrons) within a material. These electrons don't move at the speed of light.
* The speed of electricity in a conductor is called the "drift velocity." This is the average velocity of the electrons as they move through the conductor. Drift velocity is typically much slower than the speed of light, often on the order of millimeters per second.
* The speed of electricity in a conductor is also influenced by factors like the type of material, the conductor's cross-sectional area, and the applied voltage.
However, the effect of electricity seems to travel at a much faster speed than the drift velocity. This is because the electric field that drives the electron flow propagates at a speed close to the speed of light. So, while the electrons themselves move slowly, the information about the electrical signal travels much faster.
Think of it like a chain reaction. When you push the first link of a chain, the force travels quickly through the chain, even though each link only moves slightly. Similarly, the electrical signal travels quickly through the conductor, even though the electrons themselves move relatively slowly.
