where σ is the conductivity of the medium. The current density is tangentially oriented. Now the problem reduces to the determination of the magnetic flux linking a circular loop in the medium due to a reciprocally energizing current in the coaxially situated magnetometer coil..
(12.32)
- Fig. 12.14. Geometry for calculating the spatial sensitivity of a magnetometer in a cylindrically symmetric situation.
The basic equation for calculating the vector potential at point P due to a current I flowing in a thin conductor is
(12.33)
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