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If I have a USB 3.1 port that provides a maximum current of 0.9A at a voltage of 5V, when I connect a device with a resistance of 2 ohms and I want to calculate the current that will flow through it. I
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If I have a USB 3.1 port that provides a maximum current of 0.9A at a voltage of 5V, when I connect a device with a resistance of 2 ohms and I want to calculate the current that will flow through it. I use Ohm's law and calculate that the current that will flow will be 2.5 by dividing the voltage by the resistance, but if the maximum current it provides is 0.9 A how is this possible? Am I calculating wrong?

User Vadian
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1 Answer

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Answer:

By understanding exactly what the word resistance means in this context. It is a simple constant of proportionality.

sample of a conductor, there was a simple linear relationship between current and voltage. If you doubled the voltage the current would double. It is possible to write

R=V/I

Step-by-step explanation:

User Vladiim
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