Comment on Why are laptop adapters so much larger than phone adapters of same power rating?

• spankmonkey@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

  If I’m misremembering the details, feel free to clarify.

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  • CrazyLikeGollum@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

    The equation to determine watts is P=VA

    If you have the same voltage and a higher amperage, then by definition you have a higher wattage.

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    • spankmonkey@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

      Dammit, thought they all multiplied into a fourth thing.

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  • commandar@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

    Wattage = V x A.

    They’re pointing out that it’s impossible to hold both wattage and voltage constant while changing the amperage.

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