The large magnetic fields used in MRI can produce forces on electric currents within the human body. This effect has been proposed as a possible method for imaging "biocurrents" flowing in the body, such as the current that flows in individual nerves. For a magnetic-field strength of 2.1T, estimate the magnitude of the maximum force on a 1mm-long segment of a single cylindrical nerve with a diameter of 1.5mm. Assume that the entire nerve carries a current due to an applied voltage of 130mV (that of a typical action potential). The resistivity of the nerve is 0.60Ω⋅m.