O-LevelPhysicsElectricity5054/11 · May/June 2020 · Q361 Mark
A battery consists of three identical cells in parallel. What is the unit of electromotive force (e.m.f.) and to what is the e.m.f. of the battery equal?
Aunit: J/C, e.m.f. of the battery is equal to: the sum of the e.m.f.s of the three cells
Bunit: J/C, e.m.f. of the battery is equal to: the e.m.f. of one of the cells
Cunit: N/V, e.m.f. of the battery is equal to: the sum of the e.m.f.s of the three cells
Dunit: N/V, e.m.f. of the battery is equal to: the e.m.f. of one of the cells
✓ Correct answer
B: unit: J/C, e.m.f. of the battery is equal to: the e.m.f. of one of the cells
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