1.  The voltage, VL, across an inductor is defined in ANDES as the voltage difference (Vb - Va) where b is a point on the "downstream" current side of the inductor and a is a point on the "upstream" side of the inductor, as shown below. VL is given by

       VL = - L*dI/dt = - L*dIdt      (Andes notation)



Note:  When one has a constant rate of change of current or when an average rate of change is needed, the rate of change is given by

    dIdt = (I2 - I2)/t12

where t12 is the time between t1 and t2.


2.  The energy, UL, stored in an inductor that is carrying a current is given by

    UL = 0.5*L*I^2

where L is the inductance of the inductor in Henrys (H) and I is the current through the inductor in Amperes (A).