For success in Physics II exams, ensure you know and understand key formulas such as Ohm's law (V=IR), Coulomb's law (F=kq1q2/r^2), the Lorentz force equation (F=q(E+v×B)), Snell's law (n1sinθ1=n2sinθ2), Planck's equation (E=hν), and the first and second laws of thermodynamics. However, comprehension of when and how to apply these formulas is equally crucial.