Tag: fun with magnets

Quizzes (3) Questions (5)

Questions Related to fun with magnets

Multiple choice physics fun with magnets let's make a magnet making magnets making and handling magnets

When the north pole of a bar magnet picks up an iron nail which of the following are induced in the nail ?

  1. North poles

  2. South poles

  3. A north pole and south pole

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

As the attraction occurs only in between two unlike poles, thus north pole of magnet induces south pole in the nail and north at the other end.

Multiple choice physics fun with magnets let's make a magnet making magnets making and handling magnets

All magnetic materials lose their magnetic properties when:

  1. Dipped in water

  2. Dipped in oil

  3. Brought near a piece of iron

  4. Strongly heated
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Curie- Temperature:
The temperature at which any magnetic field material loses its magnetic property which is at a much higher temperature thus being strongly heated,
Magnets can be demagnetized.
Multiple choice physics fun with magnets let's make a magnet making magnets making and handling magnets

Soft iron pieces are placed across the ends of bar magnets when stored. Such pieces are called :

  1. preservatives

  2. keepers

  3. compasses

  4. poles
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Soft iron pieces are placed across the ends of bar magnets when stored; such pieces are called magnetic keepers. If the two magnets are placed side by side there will be mutual repulsion or attraction that weakens the magnetic strength. So magnets are placed side by side with opposite poles near to each other.