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Table 2 Physical characteristics of the coils. The resistance of the coils was too low (order of milliohms) to measure accurately as measurements were dominated by contact resistance.

From: Differential activation of nerve fibers with magnetic stimulation in humans

Coil Turns per layer Layers Inner diameter (cm) Outer diameter (cm) Wire gauge Inductance (μH)
1 3 3 5.2 7.6 8 7.5
2 2 5 5.1 9.8 6 8.5
3 5 5 5.1 10.2 8 41