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Question

State whether the given statement is True or False :
Lightning conductor cannot protect a building from lightning.


A
True
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B
False
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Solution

The correct option is B False
Answer is False.

The use of a lightning rod on a building protects the building by preventing the lightning strike. The idea is based upon the principle that the electric field strength is great around a pointed object. The intense electric fields surrounding a pointed object serve to ionize the surrounding air, thus enhancing its conductive ability. 
As a storm cloud approaches, there is a conductive pathway established between the statically charged cloud and the lightning rod. The static charges gradually migrate along this pathway to the ground, thus reducing the likelihood of a sudden and explosive discharge. 
The primary role of a lightning rod is to discharge the cloud over a longer length of time, thus preventing the excessive charge buildup that is characteristic of a lightning strike.
Hence, l
ightning conductor is a device to protect a building against lightning.

Physics

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