Why are sparks created? | Electrostatic potential and Capacitance | Physics | Khan Academy

How can electricity flow through the air? How are these electric sparks even possible? Let's explore that in this video!

00:00 Introduction
00:30 What happens when we overcharge a conducting sphere?
01:32 What leads to an electron avalanche?
02:02 Analogy
03:05 How are sparks created?
04:08 Magnitude of the electric field at which air becomes conductive

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