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Physics · Oct / Nov 2019 · Paper 12 · Question 37

5054The transformer

Transformers are used to transmit electrical energy between power stations and transmission cables, as shown. [diagram: power station — transformer — transmission cables] What is the purpose of the transformer in the diagram?

  1. Ato decrease the current and the potential difference from the power station
  2. Bto decrease the current and increase the potential difference from the power station
  3. Cto increase the current and the potential difference from the power station
  4. Dto increase the current and decrease the potential difference from the power station

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Correct answer: B. to decrease the current and increase the potential difference from the power station

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