what is meant resistance
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Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). Ohms are named after Georg Simon Ohm (1784-1854), a German physicist who studied the relationship between voltage, current and resistance.
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Resistance is the opposition that a substance offers to the flow of electric current; the term contrasts with conductance, which is a measure of the ease with which current flows through a substance.
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