Consider a coaxial cable, which consists of a thin wire inside a thin cylindrical conducting shell, as illustrated in the figure. The central wire carries a currentIo = 10μA inwards, while the outer cylindrical shell carries a current outwards with a uniform current density Jo. The outer shell has a thickness of a = 100μm and a radius of R = 5/3 mm. Assuming that a < R, determine the value of J, required to achieve a zero magnetic field outside the cable. [Take π = 3]RakRO a. 105 A/m²O b. 5 x 104 A/m²O c. 1 A/m²O d. 2 x 105 A/m²Oe. None of the above

We can solve this problem by Ampere Circuital Law . Given condition a <<< R

Answered: Consider a coaxial cable, which…

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