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View Diary: The simple innovation that could make wind power a big player (230 comments)

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  •  I'm not even a VI-1 (0+ / 0-)

    But I do remember cramming all those equations into my head many years ago, the night before a physics 1 exam. But how can the equation V = IR suggest anything other that at a given resistance, if you increase V then you increase I?

    •  If you have a perfect voltage source (0+ / 0-)

      then increasing the voltage across a particular resistance will increase the current proportionately.  But in practice, any voltage source (like a battery) has an internal resistance, which sums with the load (and transmission) resistance.

      But what's actually going on is that we have a power source -- something that generates a constant (at least at a given point in time) IV.  If we increase the voltage of the power source, we correspondingly decrease the current.

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