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Question
When is \[Q\] in unstable equilibrium in the field of \[P\]?
Options
When the angle is zero
When \[m_Q\] is antiparallel to \[B_P\]
When \[m_Q\] is neither parallel nor antiparallel to \[B_P\]
When \[m_Q\] is parallel to \[B_P\]
MCQ
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Solution
A magnetic moment \[m_Q\] antiparallel to \[B_P\] gives unstable equilibrium. This orientation has maximum potential energy.
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