From 9fda483399373901381160a8d73f9a85b313e4c3 Mon Sep 17 00:00:00 2001 From: tactonbishop Date: Sun, 21 Aug 2022 19:00:05 +0100 Subject: [PATCH] Last Sync: 2022-08-21 19:00:05 --- ...xes_for_units_of_electrical_measurement.md | 20 +++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/Electronics/Physics_of_electricity/Prefixes_for_units_of_electrical_measurement.md b/Electronics/Physics_of_electricity/Prefixes_for_units_of_electrical_measurement.md index 426c4c0..56b996f 100644 --- a/Electronics/Physics_of_electricity/Prefixes_for_units_of_electrical_measurement.md +++ b/Electronics/Physics_of_electricity/Prefixes_for_units_of_electrical_measurement.md @@ -3,3 +3,23 @@ categories: - Electronics tags: [physics, electricity, exponents] --- + +# Prefixes for unit of electrical measurement + +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 | +|--------|--------|------------------------|-----------------------------| +| Giga- | G | $10^9$ | 1,000,000,000 | +| Mega- | M | $10^6$ | 1,000,000 | +| Kilo- | k | $10^3$ | 1,000 | +| Milli- | m | $10^{-3}$ | 0.001 | +| Micro- | $\mu$ | $10^{-6}$ | 0.0000001 | +| Nano- | n | $10^{-9}$ | 0.0000000001 | +| 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). + +A mA is equal to one thousandth of an ampere: 0.001 A. It takes 1000 milliamperes to equal one ampere. + +A $\mu$A is equal to one millionth of an ampere: 0.0000001 A. It takes one million micoramperes to equal one ampere. \ No newline at end of file