# 7.6: Period of Oscillation of a Magnet or a Coil in an External Magnetic Field

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[ "article:topic", "authorname:tatumj" ]

\[P = 2 \pi \sqrt{\frac{I}{p_mB}}.\label{7.6.1}\]

For a derivation of this, see the derivation in Section 3.3 for the period of oscillation of an electric dipole in an electric field. Also, verify that the dimensions of the right hand side of equation \ref{7.6.1} are \(\text{T}\). In this equation, what does the symbol \(I\) stand for?