Physics 5054 · O Level · Electromotive force and potential difference

Electromotive force and potential difference — practice question

The diagram shows a battery made from three $1.5\,\text{V}$ cells. What is one advantage of arranging the cells like this?

  • AThe battery can supply a current for a longer time than a single $1.5\,\text{V}$ cell.
  • BThe battery can supply any e.m.f. between $0\,\text{V}$ and $4.5\,\text{V}$.
  • CThe battery supplies more energy to each coulomb of charge than a single $1.5\,\text{V}$ cell.
  • DThe e.m.f. of the battery is $4.5\,\text{V}$.

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