Physics · May / June 2016 · Paper 12 · Question 27
5054Electromotive force and potential difference
The diagram shows a battery of three 1.5 V cells. [diagram of three cells in parallel] What is an advantage of this arrangement of cells?
- AThe battery can supply a current for a longer time than a single 1.5 V cell.
- BThe battery can supply any e.m.f. between 0 V and 4.5 V.
- CThe battery supplies more energy to each coulomb of charge than a single 1.5 V cell.
- DThe e.m.f. of the battery is 4.5 V.
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Correct answer: A. The battery can supply a current for a longer time than a single 1.5 V cell.
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