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    Question

    Which of the following best describes a transistor?

    A A device that converts mechanical energy into electrical energy. Correct Answer Incorrect Answer
    B A device that amplifies or switches electronic signals and electrical power. Correct Answer Incorrect Answer
    C A device that stores and retrieves digital data. Correct Answer Incorrect Answer
    D A device that generates electromagnetic waves. Correct Answer Incorrect Answer

    Solution

    A transistor is a miniature semiconductor that regulates or controls current or voltage flow in addition amplifying and generating these electrical signals and acting as a switch/gate for them. Typically, transistors consist of three layers, or terminals, of a semiconductor material, each of which can carry a current.

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