-Charge and matter (electric current, electric potential) .
-Electric field, electric dipole, Millikan exp.
-Electric flux of Gauss's law. Electric potential.
-Capacitors, capacitance, connection of capacitors.
-Electric current and ohm’s law.
-Magnetic field, Hall effects. Galvanometer.
-Cyclotron, velocity selector, mass spectrometer.
-Electromagnetic induction and Faradays law.