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Can be defined as the amount of resistance that will produce a potential difference (p.d.) or voltage of 1 Volt across it when a current of 1 Ampere flowing through it.
Can be defined as the amount of current which, when flowing through a resistance of 1 Ohm will produce a potential difference of 1 Volt across the resistance.
Can be defined as the difference in potential (voltage) produced across a resistance of 1 Ohm through which a current of 1 Ampere is flowing.
“When the temperature is constant, the potential difference across the ends of a resistance is proportional to the current flowing through it”