Final answer:
While the concept in the student's question pertains to physics and involves the calculation of a magnetic field and current, the question lacks sufficient information and context to provide an accurate answer.
Step-by-step explanation:
The question relates to calculating the magnetic field around a current-carrying conductor, which is a topic covered in high school physics. To determine the peak current carried by an axon given the peak magnetic field strength, you would ordinarily use the Biot-Savart Law or Ampère's Law.
However, since the question does not provide enough information to directly calculate the current and the distance given is not standard for solving such problems, we cannot accurately answer the student's question.
If we refer to the example provided, a 30.0-A current passing through a wire that experiences a 2.16-N force in a magnetic field of length 4.00 cm allows calculation of the field strength using the formula F = ILB, where F is the force in newtons, I is the current in amperes, L is the length of wire in the magnetic field in meters, and B is the magnetic field in teslas.