Homework Help: physics

Posted by Anonymous on Monday, December 10, 2012 at 7:58am.

The current density in a cylindrical conductor of radius R = 59.5 cm, varies as J(r) = J0r/R (in the region from zero to R), where J0 = 0.423 C/m2.

a) Find the magnitude of the magnetic field at r = 29.75 cm.

b) Find the magnitude of the magnetic field at r = 119 cm

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