Question:
In a co-axial straight cable, the central conductor and the outer conductor carry equal currents in opposite directions. The magnetic 
field is zero.
(1) inside the outer conductor
(2) in between the two conductors
(3) outside the cable
(4) inside the inner conductor 
 
                                                               JEE -2024
Solution:                
In a co-axial straight cable, the central conductor and the outer conductor carry equal currents in opposite directions. The magnetic field is zero. (1) inside the outer conductor (2) in between the two conductors (3) outside the cable (4) inside the inner conductor JEE -2024

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