1. Tardigrade
  2. Question
  3. Physics
  4. A thick current carrying cable of radius 'R' carries current 'I' uniformly distributed across its cross-section. The variation of magnetic field B ( r ) due to the cable with the distance 'r' from the axis of the cable is represented by :

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. A thick current carrying cable of radius $'R'$ carries current $'I'$ uniformly distributed across its cross-section. The variation of magnetic field $B ( r )$ due to the cable with the distance $'r'$ from the axis of the cable is represented by :

NEETNEET 2021Moving Charges and Magnetism

Solution:

$B \propto r(0 \leq r \leq R)$
$B \propto \frac{1}{r}(r \geq R)$