Define magnetic field. How will you determine the direction of magnetic field at a point using a magnetic compass?
Answers
Explanation:
the direction of magnetic field lines is defined to be the direction in which the north pole of a compass needle points. If you place a compass near the north pole of a magnet, the north pole of the compass needle will be repelled and point away from the magnet.
The area of space near a magnet, electric current, or floating charged particle in which the magnetic force ACTS on another magnet, electric current, or floating charged particle is called a magnetic field. A magnetic field is invisible, but can be traced using a magnetic compass. A compass has a small bar magnet on one axis to rotate it. The compass needle points to the direction of the earth 's magnetic field or magnetic field of magnet.
Magnetic field can be mapped using small plotting compass:
Place the plotting compass on a piece of paper near the magnet.
Mark the direction.
Move the plunging compass to several positions in the magnetic field that each time mark the direction of the needle.
Join the points to show the field lines
A needle of rotating compass indicates the South Pole of the magnet.
A bar magnet with a magnetic field rotating around the north to South Pole, five small, planting compass sit on top of either side. A magnetic field in the earth, which is made up of iron and nickel, produces this magnetic field.