The resistance of a parallel combination is larger than the largest resistance. Current is an excess charge. Charges that flow in circuit are from the battery. The bigger the battery, the more voltage. Power and energy are the same thing.
Batteries create energy out of nothing.
Magnetic field lines start at one pole and end at the other. Poles can be isolated. Flux is the same as field lines. Flux is actually the flow of the magnetic field. Magnetic fields are the same as electric fields.