Vectors operation in Excel
I made this spreadsheet to help me calculate the return current in unbalanced three phase loads. In this case the data to enter is the power factor and the magnitude of the current in each phase. The table will show the return current in complex number, polar and rectangular form. The chart will show the vector representing the current in the neutral conductor (in black).
The next spreadsheet calculates and plots the voltages across a resistor and an inductor (it can be easily changed to capacitor) in a series circuit.
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