marissarsmith2525 marissarsmith2525
  • 23-01-2024
  • Physics
contestada

A long straight wire of radius a carries a steady current. The current is uniformly distributed across its cross-section.the ratio of the magnetic field at a4 inside and a4 outside from the surface of wire is:
A 1:1
B 7:16
C 15:16
D 16:9

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