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7th Class Science Electric Current and Its Effects Question Bank Electric Current and Its Effects

  • question_answer
    DIRECTIONS: Read the passage given below and answer the questions that follow. Passage When an electric current passes through a wire, it behaves like a magnet. This is the magnetic effect of current. When the electric current is switched off, the coil generally loses magnetism. Such coils are called electromagnets. Which of the following make use of electromagnets?

    A) a crane           

    B) an electric bell

    C) Both of these               

    D) None of these

    Correct Answer: C

    Solution :

    An electromagnet is attached to the end of crane. An electric bell uses an electro magnet.


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