A coaxial cable consists of a thin inner current carrying conductor fixed along the axis of a hollow current carrying conductor. Let `B_1` and `B_2` be the magnetic fields in the region between the conductors and outside the conductor respectively.

Options

A. `B_1 ne0 , B_2 ne=0 ` for conductors carrying equal currents in opposite sie.
B. `B_1 ne0 , B_2 ne=0 ` for conductors carrying unequal currents in opposite direction.
C. `B_1 ne0 , B_2 ne=0 ` for conductors carrying unequal currents in same direction.
D. `B_1 =B_2` for conductors carrying equal current in same directions at distance x and 2x from the axis respectively.

Answer

B, C, D