If we use the samples of currents from the last column of Table 13.1, the current phasor turns
out to be (−1000 + j0), which is the correct value of the phasor for the assumed current waveform.
Note that the current phasor obtained without removing the DC offset is in error. If the phasors
are to be calculated from analog oscillographic records, one could follow the same procedure as
above, after the waveform samples are first digitized. Alternatively, a less accurate procedure of
reading off the phase angles from the zero crossing of waveforms could also be used