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2.
A region in free space has magnetic vector potential, A = 50 p² az Wb/m.
(a) Show that magnetic field, H-100p/дo as A/m."
(b) Show that current density J = -200/μo az A/m².
Use J to find the total current crossing the surface 0 <p<1,0<<2,
(d) Use the value of H at p = 1 to calculate H dl for p = 1 and z = 0.

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