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प्रश्न
Define magnetic field lines. Describe an activity to draw a magnetic field line outside a bar magnet from one pole to another pole.
उत्तर
Magnetic field lines:
Magnetic field is the space around a magnet wherein magnetic force can be felt.
The magnetic field lines of a bar magnet can be mapped using a magnetic compass. The compass can be moved from one pole of the bar magnet to another pole. We can trace the field lines by moving the compass gradually and drawing a corresponding line which the compass would trace while following a particular line of force.
In this activity, we will get a magnetic field pattern around the magnet. This also allows us to see the magnetic field lines leaving the north pole of the magnet and enter its south pole.
APPEARS IN
संबंधित प्रश्न
You are given the magnetic field pattern of a magnet. How will you find out from it where the magnetic field is the strongest?
What is a magnetic field? How can the direction of magnetic field lines at a place be determined?
If you hold a coil of wire next to a magnet, no current will flow in the coil. What else is needed to induce a current?
What is an artificial magnet? State two reasons why do we need artificial magnets .
In following figure, draw at least two magnetic field lines between the two magnets.
(b) 
In a uniform magnetic field, the field lines are:
State briefly the molecular theory of magnetism.
Complete the following diagram of magnets to show the lines of force.
Inside the magnet, the field lines moves ____________.
The relative strength of the magnetic field at a point in the space surrounding the magnet is shown by the ____________.
