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
Write true or false for a given statement.
A current-carrying coil, when suspended freely, can rest in any direction.
Fill in the blank.
Magnetic poles always exist in ...............
Answer the following in detail.
How is the single-touch method of magnetism different from the double-touch method?
Answer the following in detail.
How can a magnet be demagnetized?
Describe, how you will proceed to determine the position of the pole of a bar magnet.
If a magnet is carefully broken into two pieces as shown in figure (i), how does the magnetic strength of each piece compare with that of the original magnet? If another magnet is carefully broken in half along its long axis shown in figure (ii), how would the strength of each piece compare with that of the original magnet?
What is a natural magnet?
State three important properties of a magnet.
Give scientific reason:
Not attraction but repulsion is a sure test of magnetism.
The pole of a freely suspended magnet that points towards the north is called the south pole and what points towards the south is the celled north pole.
