Problem 83-2 Source: Adapted from Example 22.1 - page 668 - BOYLESTAD, Robert L. - Book: Introdução à Análise de Circuitos - 10ª Edição - Editora Prentice Hall - 2004.
In the circuit of the
Attention -
In the book, page 668, the current
Solution of the Problem 83-2
Item a
To answer this item see the diagram shown in the
Item b
From the diagram shown above, note that line voltages are
Item c
In a
Since the impedances in the three phases are equal, just repeat the previous calculation for the other phases. So:
Item d
To prove that
Therefore, it is proved that for a three-phase circuit in the balanced star configuration, the neutral current is equal to