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Learning Raspberry Pi

You're reading from   Learning Raspberry Pi Unlock your creative programming potential by creating web technologies, image processing, electronics- and robotics-based projects using the Raspberry Pi

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Product type Paperback
Published in Apr 2015
Publisher
ISBN-13 9781783982820
Length 258 pages
Edition 1st Edition
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Authors (2):
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Serge Schneider Serge Schneider
Author Profile Icon Serge Schneider
Serge Schneider
Samarth Shah Samarth Shah
Author Profile Icon Samarth Shah
Samarth Shah
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Basic laws of electronics


The most basic law of electronics are Ohm's law and Kirchhoff's law.

Ohm's law

Ohm's law deals with the relationship between voltage and current in an ideal conductor. This relationship states that:

The potential difference (voltage) across an ideal conductor is proportional to the current through it.

The constant of proportionality is called the resistance, R, which has already been described in the previous section. Ohm's law is given as follows:

V = I R

Here, I is the current through the conductor in units of amperes, V is the potential difference measured across the conductor in units of volts, and R is the resistance of the conductor in units of ohms.

Kirchhoff's law

Kirchhoff's law is the starting point for analysis of any circuit. In 1845, Gustav Kirchhoff, a German physicist, first described two laws that became central to electrical engineering. The laws were generalized from the work of Georg Ohm. These two laws are:

  1. Kirchhoff's Current Law (KCL).

  2. Kirchhoff's...

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