Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

This is an AMP page - Open full page! for all features.

• the most efficient way to navigate the Engineering ToolBox!

# Resistors - Standard Values

Preferred number series for resistors according IEC 60063 are indicated below.

.

### Resistors with 10% tolerance

Resistors with 10% tolerance
ohmkohm
10 100 1 10 100 ..
12 120 1.2 12 120 ..
15 150 1.5 15 150 ..
18 180 1.8 18 180 ..
22 220 2.2 22 220 ..
27 270 2.7 27 270 ..
33 330 3.3 33 330 ..
39 390 3.9 39 390 ..
47 470 4.7 47 470 ..
56 560 5.6 56 560 ..
68 680 6.8 68 680 ..
82 820 8.2 82 820 ..

.

### Equivalent Expressions of Ohm's Law

Ohm's law (1) can also be expressed as

U = R I                         (2)

or

R = U / I                       (3)

## Related Topics

### • Electrical

Electrical engineering with units, amps and electrical wiring. Wire gauges, electrical formulas, motors and more.

## Related Documents

### Aluminum and Copper Wires - Electrical Resistance vs. Cross-Sectional Area

Electrical resistance in plain copper or aluminum wires.

### Electrical Parallel Circuits

Resistance, voltage and current in electrical parallel circuits.

### Electrical Resistance in Serial and Parallel Networks

Resistors in parallel and serial connections.

### Ohm's Law

The relation between voltage, current and electrical resistance.

### Resistors - Color Codes Calculator

Color codes for fixed resistors - values and tolerances - online calculator.

### Resistors - Letters and Digit Codes

Letter and digit codes to indicating resistor values.

## Search Engineering ToolBox

• the most efficient way to navigate the Engineering ToolBox!

## SketchUp Extension - Online 3D modeling!

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!