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प्रश्न
Write a short note on lighting conductors.
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उत्तर
Lightening conductor is a device used to safeguard the large buildings against the lightening of the thunderstorm. Normally, they are fitted on the top of tall buildings as a safety device. It consists of few metal spikes fitted to the highest part of the building and connected to thick copper strip which is buried inside the earth.
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संबंधित प्रश्न
Write true or false of the following statement.
Magnetic poles occur in pairs.
State three important uses of a magnet.
If a bar magnet is hung by a thread tied at its center, its north pole becomes steady in the direction of the ______ Pole of the earth.
The alloys called ______ and ______ are used for making industrial magnets.
What are magnetic keepers? What are they used for?
Artificial magnets are made in different shapes such as ______, _____ and _______.
How can you identify non-magnetic materials? Give an example of a nonmagnetic material.
List out the uses of magnets.
