Question

The figure below is a cross-sectional view of a coaxial cable. The center conductor is surrounded by a rubber layer, an outer conductor, and another rubber layer. In a particular application, the current in the inner conductor is 11 = 1.12 A out of the page and the current in the outer conductor is 12 = 3.06 A into the page. Assuming the distance d = 1.00 mm, answer the following (a) Determine the magnitude and direction of the magnetic field at point magnitude direction --Select- (b) Determine the magnitude and direction of the magnetic field at point b. magnitude direction --Select-

Answer 1

n Soin Given: cuorent in the inner conductor (I 1) => 1.12 A current in the outer conductor (I2] =>3.06 A Acc. to Ampere's law dB dd = Mo I At the point a . B. (2na) = lol B = Moli 4TX 107 x 1.12 1.200 7 21 X 1 X 10²3 B =72-24 X 10²4 T The direction of the field is in upwards by At the poindb B (2770) = Mo (12-) Bz7 H0 (12-IV), 471 x 107(3.08 -1.2). 21b 20 x 3x 10-3 -7 1.29. x 10-4 T The direction of the field is in downwards