How many volts would it take to push 1 amp through a resistance of 1 ohm?

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Explanation:

Ohm's Law give the following relationship between the potential across a conductor, the electrical resistance of that conductor, and the current through that conductor:

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It is given that the current through this conductor is , and that the electrical resistance of this conductor is .

Note, that the unit of electrical resistance Ohm is a composite unit; (volts per ampere.)

Substitute the value of and into the equation from Ohm's Law to find the potential across this conductor:

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the answer is a)

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