E & M Qual Problems

1.) A rigid, infinitesimally thin conducting ring of radius [math]a=0.15 m[/math] and mass [math]m=1.0kg[/math] is initially oriented nearly vertically in a uniform vertical magnetic field [math]\vec{B} = B_0 \hat{z}[/math] where [math]B_o = 2.5 Telsa[/math]. The resistance of the ring is [math]R = 10^{-3} \Omega[/math]