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Why is higher voltage lower amps

Kelly Marie Angel

This question mite be unanswerable  but here goes we all know that if you gave say 1 Kw at 110 volts it's about 10 amps but 1 Kw at 240 volts is about 4 amps what I was wondering is why?  Amps is the flow of current so how can you have less flow doing the same work?  That's my real question. As always not to heavy on the maths please cheers all Kelly

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  • Or another analogy is flow and pressure - if you have a litre/minute of compressed air at say 100psi you can probably get twice as much work out of it as if it were to 50psi.

    In early electrical writing (and even the odd bit of legislation) voltage is described as "pressure".

       - Andy.

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  • Or another analogy is flow and pressure - if you have a litre/minute of compressed air at say 100psi you can probably get twice as much work out of it as if it were to 50psi.

    In early electrical writing (and even the odd bit of legislation) voltage is described as "pressure".

       - Andy.

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