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10
Electronics/Physics_of_electricity/Prefixes_for_units_of_electrical_measurement.md
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@ -9,14 +9,14 @@ tags: [physics, electricity, exponents]
In electronics we are often dealing with units that are very large or very small, thus we rely on [exponents](/Mathematics/Algebra/Exponents.md) for formal expression. In electronics we are often dealing with units that are very large or very small, thus we rely on [exponents](/Mathematics/Algebra/Exponents.md) for formal expression.
| Prefix | Symbol | Expression as exponent | Expression as decimal value | | Prefix | Symbol | Expression as exponent | Expression as decimal value |
|--------|--------|------------------------|-----------------------------| | ------ | ------ | ---------------------- | --------------------------- |
| Giga- | G | $10^9$ | 1,000,000,000 | | Giga- | G | $10^9$ | 1,000,000,000 |
| Mega- | M | $10^6$ | 1,000,000 | | Mega- | M | $10^6$ | 1,000,000 |
| Kilo- | k | $10^3$ | 1,000 | | Kilo- | k | $10^3$ | 1,000 |
| Milli- | m | $10^{-3}$ | 0.001 | | Milli- | m | $10^{-3}$ | 0.001 |
| Micro- | $\mu$ | $10^{-6}$ | 0.0000001 | | Micro- | $\mu$ | $10^{-6}$ | 0.0000001 |
| Nano- | n | $10^{-9}$ | 0.0000000001 | | Nano- | n | $10^{-9}$ | 0.0000000001 |
| Pico- | p | $10^{-12}$ | 0.0000000000001 | | Pico- | p | $10^{-12}$ | 0.0000000000001 |
For example, with Amps we tend not to use 1 whole amp as this is far too large for most electronics. More common is the milliampere (mA) and the microampere ($\mu$A). For example, with Amps we tend not to use 1 whole amp as this is far too large for most electronics. More common is the milliampere (mA) and the microampere ($\mu$A).