This paragraph contains no physics. I have placed all the electric current and circuit topics into 5.2 (which I call ‘circuits’ instead of ‘heating effect of electric currents’, which I believe does not capture the essence of the topic particularly well)
5.1 Electric fields
Charges (- and +), field lines, forces on them, Coloumb’s law
Potential and potential energy, electronvolts
5.2 Electric circuits
Drift velocity
Conduction in metals
Electric current
Definition of resistance, resistivity circuit diagrams
Kirchoff’s circuit laws
Power dissipation in circuits, effects of power dissipation
Electric cells, internal resistance, and emf
5.3 Magnetism
Magnetic field (right hand grip)
Direction of the force on a particle moving in the field (F = q (v x B)) and on a current carrying wire in the field (F = Bqv, F = BIL)