فیزتک

Check this above image for a multiple choise quiz

1) First comases made up of _____________ called _____________.

2) What we call lodesstone now?

3) Name three feromagnetic materials?

4) Why steel has also magnetic properties?

5) In a magnet, which area is called magnetic pole?

6) What happen if you put two North poles together?

7) What will happen if a north pole and a south pole put together?

8) A piece of iron will be attracted to a magnet, why iron is not a magnet?

9) How can we know that two metals are magnets?

10) How we can magnetise a piece of iron?

11) Why a typical piece of iron is not a magnet?

12) What is a saturated magnet?

13) When we have a saturated magnet?

14) Write two types of magnetic material and give an example for each of them.

15) Why iron is a soft magnetic material?

16) Why steal is a hard magnetic material?