Electric circuits notes

This section is Ohm's law and resistance networks: **$V=IR$, ohmic vs non-ohmic conductors, series and parallel equivalent resistance, and how current and potential difference are shared. It is not…

This section is power and electrical energy in circuits: **$P=W/\Delta t$, the working forms$P=VI$,$P=I^{2}R$,$P=V^{2}/R$, energy$W=Pt$(and$W=VI\Delta t$family), units watt (W) and joule (J), plus kWh as a practical energy…

This section is cost of electricity: the kilowatt hour (kWh) as the billing unit, and the method cost = energy × tariff. It is not the full set of power equations (**$P=VI$,$P=I^2R$,$P=V^2/R$). Those sit…