5.28 A uniform current density given by J = îJ, (A/m?) gives rise to a vector magnetic potential A =-2 4oJo x² + y²) (Wb/m). (a) Apply the vector Poisson's equation to confirm the above statement. (b) Use the expression for A to find H. (c) Use the expression for J in conjunction with Ampère's law to find H. Compare your result with that obtained in part (b).

5.28 A uniform current density given by J = îJ, (A/m?) gives rise to a vector magnetic potential A =-2 4oJo x² + y²) (Wb/m). (a) Apply the vector Poisson's equation to confirm the above statement. (b) Use the expression for A to find H. (c) Use the expression for J in conjunction with Ampère's law to find H. Compare your result with that obtained in part (b).