4.2.3 Electromotive force and potential difference

4.2.3.1—Electromotive force (e.m.f.) as the

4.2.3.2—E.m.f. is measured in volts (V)

4.2.3.3—Potential difference (p.d.) as the

4.2.3.4—P.d. between two points is measured in

4.2.3.5—Use of voltmeters (analogue and

4.2.3.6—E.m.f.: E = W/Q

4.2.3.7—P.d.: V = W/Q

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4.2.3 Electromotive force and potential difference