تيار كهربائي
Spheromaks are subject to external forces, notably the thermal gradient between the hot plasma and its cooler surroundings. Generally, this leads to a loss of energy at the outer surface of the spheromak though black-body radiation, leading to a thermal gradient in the spheromak itself. Electric current travels slower in the cooler sections, eventually leading to a redistribution of energy inside, and turbulence eventually destroys the spheromak.