Ohm's Law
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A nine volt battery supplies power to a cordless curling iron with a resistance of 18 ohms.
Ohm's Law
Ohm's law - Wikipedia, the free encyclopedia
V, I, and R, the parameters of Ohm's law. Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points. Introducing the constant of proportionality, the resistance , [ 1 ] one arrives at the usual mathematical equation that describes this relationship: [ 2 ]