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NEET Sample Paper NEET Sample Test Paper-46

  • question_answer
    The potential energy of magnet is:

    A) \[U=-\frac{MB}{2}\]

    B)                    \[U=-\sqrt{3}\,\,\,\frac{MB}{2}\]

    C)                    \[U\,\,=\,\,\frac{MB}{2}\]

    D)                    None of these

    Correct Answer: C

    Solution :

    \[U\,\,=\,\,-MB\,\,cos\,\phi \] \[=-MB\text{ }cos\text{ }120\] \[=\,\,+\,\frac{MB}{2}\]


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