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12-12-2018
Physics

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A 1.5m wire carries a 5 A current when a potential difference of 68 V is applied. What is the resistance of the wire?

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12-12-2018

Resistance = (voltage) / (current)

Resistance = (68 V) / (5 A)

Resistance = 13.6 ohms

Since we already know the voltage and the current, we don't need to know the length of the wire. It makes no difference.

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