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A · B · C · D · E · F · G · H · I · J · K · L · M · N · O · P · Q · R · S · T · U · V · W · X · Y · Z   entire Web this site electric resistance A measure of the degree to which an electrical component opposes the passage of current. It is the ratio of the potential difference (i.e. voltage) across an electric component (such as a resistor) to the current passing through that component. Related category    • ELECTRICITY GENERATION AND SUPPLY Also on this site: Encyclopedia of Science Transport Concepts & Designs (partner site) BACK TO TOP