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      Question

      When we want to change the magnitude of voltage but not

      the frequency, which one is used? 
      A Transistor Correct Answer Incorrect Answer
      B Capacitor Correct Answer Incorrect Answer
      C Transformer Correct Answer Incorrect Answer
      D Dynamo Correct Answer Incorrect Answer
      E none of them Correct Answer Incorrect Answer

      Solution

      Transformer is used to change the magnitude of voltage. 

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