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LESSON NOTES:

Magnetic Field in a Circular Carrying conductor:

o
Properties of Magnetic Field due to Current Carrying Circular Loop
o The magnetic field lines are nearly circular at the points where the current
enters or leaves the card board
o At the centre of the circular loop, the magnetic field lines are straight and
parallel to each other. Thus magnetic field near the centre of the coil may be
considered uniform.
o At the centre of the coil the direction of magnetic field lines is at right angle
to the plane of the coil.
o Magnetic field is strong at centre . Each segment of circular loop carrying
current produces magnetic field lines in the same direction at the centre. So the
field strength is added up.
o

Factors affecting the strength of magnetic field