Electrical Engineering › Section B · Resistance, Ohm's law, power, and energy › Topic B.3
Resistor types, color codes, conductance, and special resistors
Resistors are the most common components on any circuit board. Knowing how they are built, how their values are marked and which standard values exist lets you read a board at a glance and choose parts that can actually be bought.
In this topic
- Fixed resistors
- Variable resistors
- The colour code
- Worked example: reading four bands
- Standard values
- Worked example: five bands and surface-mount codes
- Conductance
- Ohmmeters
- Special resistors
- Common mistakes to avoid
- Key takeaways
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