what is the resistance of a conductor?
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Resistance is defined as the opposition to the flow of electrical current through a conductor. It's important to point out that conductivity and resistivity (the property that determines final resistance) are inversely proportional
To calculate the resistance R of a wire, we need to know three things:
its length – the longer the wire, the greater its resistance.
its cross-sectional area A – the greater the area, the less its resistance.
the resistivity of the material r – the greater the resistivity, the greater its resistance
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