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Q. Consider the configuration shown on the right, the
inner cylindrical conductor of radius 'a' surrounded by
a cylindrical shell of inner radius 'b' and outer radius 'c'.
The inner conductor and the outer shell each carry equal
and opposite currents I. Where I is uniformly distributed
through the conductors.
a
I
a) Find the magnetic field intensity for r< a and a <rsb
b) Calculate the stored magnetic energy per unit length
for a <r<b
c) Find the inductance per unit length for a <rsb

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