  We examine the importance of conserving the vector current in calculating
low-energy neutrino-nucleus interactions by implicitly invoking Siegert's
Theorem in describing the vector transverse electric current. We find that at
low neutrino energies (E? <50 MeV), Siegert's Theorem can change neutrino cross
sections for normal-parity non-spin-flip excitations by about a factor of
two.The same is true of muon capture rates. At higher neutrino energies the
effect of Siegert's Theorem diminishes, and by about 100 MeV the effect is very
small.
