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Lightning Conductor – Working and Theory

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How does a lightning conductor work ? Please explain

(Asked ANKUR RAJ)

Answer: Lightning conductor is a conducting rod with sharp spikes erected at the topmost region of  a building to be protected. The rod is connected to earth via thick copper strips. The contact with earth is kept well conducting.

The lightning conductor protect the building in two ways

  1. It avoids the chance of a lightning strike by corona discharge. (The opposite charge induced by the charged clouds are sprayed back to the clouds through electric wind and this avoids the potential difference getting developed to a higher value.)
  2. If a lightning strikes, it provides a conducting path to earth without affecting the building or the inhabitants or the appliances inside.

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