To eliminate cogongrass and prevent regrowth, the rhizomes must be destroyed. It has been shown that an integrated approach that combines burning, tillage (mechanical disturbance), and chemical applications provide the best solution for cogongrass management.
1 Force of magnetic field: the force exerted by a magnetic field. 2  Attraction of magnets for iron: the phenomenon of physical attraction for iron, inherent in magnets or induced by a moving electric charge or current. 3  A general term that refers to the effects originating from the electromagnetic interactions of particles.
#3. dazza95. EMF refers to voltage generated by a battery or by the magnetic force according to Faraday's Law, which states that a time varying magnetic field will induce an electric current. Electromotive force is not a force (measured in newtons) but a potential, or energy per unit of charge, measured in volts.