Physics

Problem

A magnetic dipole of moment

0.10\,\text{A\,m}^2

is initially antiparallel to a uniform magnetic field of

0.50\,\text{T}

. It is slowly rotated until it becomes perpendicular to the field. Determine the change in its potential energy

\big(\Delta U = U_{\text{final}}-U_{\text{initial}}\big)

. a) +0.05\,\text{J} b)

0\,\text{J}

-0.05\,\text{J}

-0.025\,\text{J}