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Physics · May / June 2017 · Paper 11 · Question 37

5054Electromotive force and potential difference

Why are batteries sometimes made from several identical cells arranged in parallel?

  1. AThe battery has a greater e.m.f. than a single cell on its own.
  2. BThe battery has a lower e.m.f. than a single cell on its own.
  3. CThe battery lasts longer than a single cell on its own.
  4. DThe battery supplies a smaller current than a single cell on its own.

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Correct answer: C. The battery lasts longer than a single cell on its own.

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