Ohm's Law Revision
Revision of Ohm's Law. An electrical circuit consists of 3 quantities - voltage, current and resistance. These quantities are the basis of Ohm's Law. Using two known quantities the third unknown quantity can be found. When the quantites being measured are very large or very small prefixes are used. Potential difference is the difference in voltage between any two points. All voltages being measured in a circuit are referenced to a common ground point.
Make sure you know it all! Any basic elecrical or electronic circuit consists of three seperate but very much related quantities, Voltage (V), Current (I) and Resistance (R).
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