Two parallel conductors are carrying currents in the opposite direction. The currents are non-zero and not necessarily equal. The magnitude of the magnetic field midway between them is 40 $\mu$T. If one of the currents then has its direction reversed, what is the resulting magnitude of the magnetic field midway between them?
A) a value greater than 40 $\mu$T
B) a value less than 40 $\mu$T
C) 40 $\mu$T
D) It could be any value.

Question

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The Answer of Two parallel conductors are carrying currents in the opposite direction. The currents are non-zero and not necessarily equal. The magnitude of the magnetic field midway between them is 40 $\mu$T. If one of the currents then has its direction reversed, what is the resulting magnitude of the magnetic field midway between them?
A) a value greater than 40 $\mu$T
B) a value less than 40 $\mu$T
C) 40 $\mu$T
D) It could be any value.

Two Parallel Conductors Are Carrying Currents in the Opposite Direction μ\muμ

Two Parallel Conductors Are Carrying Currents in the Opposite Direction $\mu$