Why is it that we use voltages and watts more often than amperages? 9v batteries, 12v car battery, 1000W Microwave oven. But amperages not so much, even though its “half” of what makes power, A*V=W. What property of amperes makes it so “unnecessary” to be aware of?

Bonus: how many amps and volts does a typical 1000W microwave use?

  • Iconoclast@feddit.uk
    2·
    29 days ago

    Ah, or mAh might be a little confusing though - two different batteries can have the same Ah rating but wildly different capacities.

    I always convert everything to watt-hours by multiplying ampere-hours by voltage.

    • Decq@lemmy.world
      1·
      29 days ago

      It is confusing, but it is what they do. I’m not sure why they do it. Probably marketing reasons, seeing as a lot of people think bigger number == bigger better. Of course if you know the nominal voltage of the battery pack it’s not a big issue. But yeah Wh or Joule would be better.