Advertisements
Advertisements
Question
What is a lodestone?
Advertisements
Solution
Lodestone is an ore of iron oxide (Fe3O4). This ore attracts small pieces of iron and it sets itself along a definite direction when it is suspended freely. It is a natural magnet which was used for the navigation by the mariners.
APPEARS IN
RELATED QUESTIONS
The figure given below shows the magnetic field between two magnets:
Copy the diagram and label theother poles of the magnets.
Which is the weaker magnet?
Fill in the following blank with suitable words:
The lines of ........... round a straight current-carrying conductor are in the shape of ...........
Explain the following :
When two pins are hung by their heads from the same pole of a magnet, their pointed ends moves apart.
Can two magnetic field lines intersect each other? Give reason to your answer.
Draw the pattern of magnetic field lines near a bar magnet placed with its North Pole pointing towards the geographic North. Indicate the position of neutral points by marking X.
Complete the following diagram of magnets to show the lines of force.
Inside the magnet, the field lines moves ____________.
The magnetic field is the strongest at ____________.
______ is the number of magnetic field lines passing through a given area.
