PSL 019


If you purchased a digital copy of this album you can now download the digital booklet containing the liner notes.


This album themed around the field of electronics.

Charge Conserv. Eq.

Cover art by Paul Rolan Perkes

Kirchhoff's First Law

This law is also called Kirchhoff's first law, Kirchhoff's point rule, or Kirchhoff's junction rule (or nodal rule).

The principle of conservation of electric charge implies that:

  • At any node (junction) in an electrical circuit, the sum of currents flowing into that node is equal to the sum of currents flowing out of that node, or:
  • The algebraic sum of currents in a network of conductors meeting at a point is zero.

Recalling that current is a signed (positive or negative) quantity reflecting direction towards or away from a node; this principle can be stated as:

Kirchhoff's Current Law

Where n is the total number of branches with currents flowing towards or away from the node.

This formula is valid for complex currents:

Kirchhoff's Voltage Law

The law is based on the conservation of charge whereby the charge (measured in coulombs) is the product of the current (in amperes) and the time (in seconds).

Free Music

You can download the track "Capacitance" from Electronique for free. Just click the download button below:


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Track Information

5Kirchhoff's First Law289T9144184065Bbm1284/404:48
7Hole Current311T9144154096?1324/406:07
8Constant Current267T9144180825C#m1284/404:45
11Impulse Response420T9144154687Am1294/404:13
  • ISWC: the International Standard Musical Work Code, is a unique, permanent and internationally recognized reference number for the identification of musical works.
  • Opus: I assign each song I write a unique identification number; this is its opus number.

All music composed, performed and produced by Paul Rolan Perkes
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