Question

3. A material, that is often used to make a temporary magnet, is- a steel alnico ticanol soft iron 4. When we suspend a bar magnet from a thread, it comes to rest along the- a north-west direction east-West direction south-west direction north-south direction 5. A device, which generally does not use a magnet, is- . a CD player a telephone a geyser an electric motor ​

Answer 1

Answer:

3) temp magnet is made from soft iron.

4) A suspended bar magnet generally comes to rest in the geographic north-south direction.

When a magnet is freely suspended then it's north pole used to get attracted by the magnetic south polarity of the Earth and point towards north direction

5) A Geyser absolutely refrain from using a magnet. The reason for the same is extremely simple. The Geyser is used to heat the water. And an extreme amount of heat on the magnet can effect it bad.

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Answer 2

Answer:

3. Soft iron

4. North-south direction

5. Geyser

Explanation:

3.) The permeability of the soft iron core is very high than other materials. So it is effective to make temporary magnets with it.

4.) The earth itself acts as a magnet. The geographic north of the earth is lying at the magnetic south of the earth and vice versa. So the magnet tied on a string, free to rotate will align in the north-south direction.

5.) A geyser is a device that makes use of the heating effect of electricity. So it is not required to use a magnet in it.