2 Emf and P.d You should be able to: (a) define potential difference (p.d.);(b) select and use the equation W = VQ;(c) define the volt;(d) describe how a voltmeter may be used todetermine the p.d. across a component;(e) define electromotive force (e.m.f.) of a sourcesuch as a cell or a power supply;(f) describe the difference between e.m.f. and p.d in terms of energy transfer
3 Circuit SymbolsDraw any circuit symbol that you can remember. ( there are 16 that you need to know)
4 Emf and Potential difference are about energy Emf and P.dEmf and Potential difference are about energy
6 Emf and P.dElectromotive force is the energy transferred per coulomb when one other type of energy is converted into electrical energy.This tells us that emf :Is measured in joules per coulombThat it always deals with the supply of electrical energy.
8 Emf and P.dPotential difference is the electrical energy transferred per coulomb when electrical energy is converted into another form of energy.This tells us that pd :Is measured in joules per coulombThat it always deals with the use of electrical energy.