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1. The working principle of the lightning rod: In the thunderstorm weather, when the charged cloud layer appears over the high-rise building, the lightning rod and the top of the high-rise building are induced with a large amount of charge.
2. Since the tip of the lightning rod is sharp, the tip of the conductor always accumulates the most charge during electrostatic induction. In this way, the lightning rod collects most of the charge.
3. The lightning rod forms a capacitor with these charged clouds. Because it is relatively sharp, that is, the area facing the two poles of the capacitor is very small, and the capacitance is also very small, which means that it can hold very little charge.
4. And it gathers most of the charge, so when there are more charges on the cloud layer, the air between the lightning rod and the cloud layer is easily broken down and becomes a conductor.
5. In this way, the charged cloud layer and the lightning rod form a path, and the lightning rod is grounded. The lightning rod can guide the charge on the cloud layer into the earth, so that it does not pose a danger to high-rise buildings and ensures its safety.
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