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Lightning : Introduction

Describe Ligh...

Question

Describe Lightning conductor.

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Solution

The lightning conductor, which Benjamin Franklin invented in 1749, is a metal pole mounted atop a building that draws lightning's electrical charge away from the structure. The rod is attached to an aluminum or copper cable that's connected to an underground conductive grid.

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Lightning conductor cannot protect a building from lightning.

Q. Lightning conductors are used to protect building from lightning strikes. Which of the following statements is / are true about lightning conductors?
1. Lightning conductors create an electric field at its top so that lightning strikes it preferentially
2. Lightning conductors reduce the effect of the strike by uniformly distributing the charge (current) over the surface of the building
3. Lightning conductors take all charge (current) to deep down in the earth
4. Lightning conductors must be installed at a place taller than the building
Select the correct answer using the code given below:

Q. To protect tall buildings from lightning, lightning conductors are installed.

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