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Define magnetic field lines. Describe an activity to draw a magnetic field line outside a bar magnet from one pole to another pole.
The magnetic field lines:
(a) intersect at right angles to one another
(b) interest at an angle 45° to each another
(c) do not cross one another
(d) cross at an angle of 60° to one anotherv
Fill in the following blank with suitable words:
The lines of ........... round a straight current-carrying conductor are in the shape of ...........
Which substances are used for making electromagnets?
State briefly the molecular theory of magnetism.
Draw diagram showing the arrangement of the lines of force for a piece of soft iron laid in line with the magnetic field.
Complete the following diagram of magnets to show the lines of force.
Inside the magnet, the field lines moves ____________.
Magnetic lines of force never ______ each other.
When the conductor is perpendicular to the magnetic field, the force will be the ______, When it is parallel to the magnetic field, the force will be ______.
