π π π 10−6 10−9 10−12 Name Current Total charge Negative terminal πΌ Δπ Positive terminal Resistance Ohm's Law πΌ= Δπ Δπ‘ π΄= Δπ = πΌΔπ‘ π₯ππππ‘ π π Rate at which energy is transferred from the battery to the moving charges Power delivered by a source of emf Rate at which energy is transferred from the current to the resistor Kirchhoffs loop law Series Resistors Parallel Resistors Series Capacitors πΆππ’π π =0; π =0 π₯π = ππ₯ππππ‘ The potential difference of (over) a battery = the potential difference of (over) a battery with no current π₯ππππ‘ slightly < π when with a current π =π πΏ π΄ πΌ = Δπ π ππππ‘ = ΔπΔπ‘ = ΔπΔπ‘ π ππππ = πΌ π ππ = ΔπΔπ‘ = ΔπΔπ‘ Δππ = πΌ Δππ ππ = ππππ‘ Kirchhoff's junction law πΆππ’π π ππ π = π₯ππππ‘ ; π = ππ₯ππππ‘ Energy gained Electromotive force SI Unit Symbol ππ = πΌ Δππ = πΌ 2 π = οΏ½ πΌππ = οΏ½ πΌππ’π‘ πβπ π= (Δππ )2 π Δπππππ = οΏ½ Δππ = 0 π Δππππ‘ = π > 0 ; Δππ = −πΌπ < 0 π ππ = π 1 + π 2 + β― −1 1 1 π ππ = οΏ½ + + β―οΏ½ π 1 π 2 πΆππ −1 1 1 = οΏ½ + + β―οΏ½ πΆ1 πΆ2 1 π½ π
