A type of transmission line for electromagnetic waves consists of two parallel conducting plates (assumed infinite in width) separated by a distance a
Each plate carries the same uniform surface current density of 16.0 A/m, but the currents run in opposite directions. What is the magnitude of the magnetic field between the plates at a point 1.00 mm from one of the plates if
a = 0.800 cm? (?0 = 4? × 10-7 T ? m/A)
A) 3.20 × 10-3 T
B) 1.00 × 10-5 T
C) 4.63 × 10-5 T
D) 2.01 × 10-5 T
E) 7.07 × 10-4 T
Answer: D
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