Advertisements
Advertisements
Question
Write a short note on lighting conductors.
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
There is repulsion between the _____ poles of a magnet and attraction between its _____ poles.
Describe, how you will proceed to determine the position of the pole of a bar magnet.
Give scientific reason:
Soft iron is used to make electromagnets.
Give scientific reason:
Two steel needles hanging from the lower end of a vertical bar magnet do not hang vertically.

Give scientific reason:
Not attraction but repulsion is a sure test of magnetism.
Maximum iron filings stick in the middle of a bar magnet when it is brought near them.
Consider the statement given below and choose the correct option.
Assertion: Iron filings are concentrated more at the magnetic poles.
Reason: The magnets are so sharp.
Why it is not advisable to slide a magnet on an iron bar back and forth during magnetising it?
Thamizh Dharaga and Sangamithirai were playing with a bar magnet. They put the magnet down and it broke into four pieces. How many poles will be there?
