10th Class Science Magnetic Effects of Electric Current Question Bank Electricity and Magnetic Effects of Electric Current

  • question_answer
    In which of the following cases the resistance of a wire gets halved?

    A) When the length of a wire is doubled.

    B) When the area of cross - section of a wire is doubled.

    C) When the current gets halved.

    D) All the above

    E) None of these

    Correct Answer: B


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