Advertisements
Advertisements
प्रश्न
How is a tall building protected from damage due to lightning?
Advertisements
उत्तर
We can protect a tall building from lightning by the use of LIGHTNING CONDUCTOR.
WORKING: When a charged cloud passes over the building induction takes place and opposite charge (negative) is induced on spikes of the conductor. Spikes being pointed (having very small area) cannot hold the charge and charge leaks into air and opposite charge in air and cloud cancel each other. Even if some charge remains on spikes it passes to earth from copper rod and the building is saved.
APPEARS IN
संबंधित प्रश्न
A lightning conductor saves the building from lighting.
To find whether a body is charged or not, an uncharged electroscope is used.
When a glass rod is rubbed with dry silk cloth, the charge acquired by the silk cloth is
When a negatively charged body is brought closer to another negatively charged body, then they will show
Why does a plastic comb rubbed with dry hair attract bits of paper?
How will you show that like charges repel and unlike charges attract each other?
Name three constituents of an atom and state the kind of charge on each of them.
State two ways of charging a conductor.
Describe Franklin’s experiment. What did he conclude from his experiment?
What are the effects of lightning?
