https://en.wikipedia.org/wiki/Lenz's_law
Lenz's law, named after the physicist Emil Lenz (pronounced /ˈlɛnts/) who formulated it in 1834,[1] states that the direction of the electric current which is induced in a conductor by a changing magnetic field is such that the magnetic field created by the induced current opposes the initial changing magnetic field.
electric have 2 points is negative(-) and positive(+), which is resisting each other balancely, but we want to reap energy from an anti-energy field: 1/2 + 1/2 + 1/2 + 1/2 = 4/2 = 2, 1/2 x 2 = 1, 1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 = 16/4 = 4, ok, also the big rice fields getting resist energy power give large power to use!!!