Negligible

Although related to the more mathematical concepts of infinitesimal , the idea of something being negligible is particularly useful in practical disciplines like physics, chemistry, mechanical and electronic engineering, computer programming and in everyday decision-making. A quantity can be said to be negligible when it is safe to ignore (neglect) it in the present case, within the margins for error that have been agreed to be acceptable in this case.

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In order for electronic circuit designers to be able to think quickly and clearly through complex problems and complex circuitry, they are mentally equipped with a number of ideal circuit concepts that they use. These include the perfect voltage source, the perfect current source, the perfect amplifier, a perfect earth and many others.

Ideal: Ideal may refer to:...

Voltage source: A voltage source is any device or system that produces an electromotive force between its terminals OR derives a secondary voltage from a primary source of the electromotive force. A primary voltage source does not need external power to operate, whereas most electronic voltage sources (as depicted...

Current source: A current source is an electrical or electronic device that delivers or absorbs electric current. Current sources can be theoretical or practical....