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  • Câu hỏi:

    All or the following are mentioned as Faraday’s achievements Except .............

    • A. 
      his invention of dynamo
    • B. 
      his discovery of the effects of electricity on chemical substances
    • C. 
      his invention of electric motor in 1821
    • D. 
      his discovery of magnetism

    Lời giải tham khảo:

    Đáp án đúng: D

    Dẫn chứng: Faraday made the first electric motor in 1821, a device that used electricity to produce movement. Then Faraday became interested in the relationship between electricity and magnetism. In 1831, he discovered that when a magnet is moved near a wire, electricity flows in the wire. With this discovery, he produced a machine for making electricity called dynamo Faraday then went on to show how electricity affects chemical substances.

    Đáp án đúng: D. his discovery of magnetism

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