>>13140274Magnetic fields could actually be used to do something similar to what I mentioned in
>>13142426 but it would be challenging to induce a sufficient current in tissue via electromagnetic inductance as the inductance of the coils make high frequency, high intensity magnetic fields require a lot of voltage to obtain. This is because the induced voltage is proportional to the rate of change of the magnetic field, but the strength of the magnetic field is proportional to the current in the coil. As you increase the impedance of the coil by increasing the frequency the current you achieve for a given applied voltage decreases in accordance with Ohm's law.