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Math Help - How many times bigger is main voltage than the voltage of car battery?

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    How many times bigger is main voltage than the voltage of car battery?

    Hi this is my home work:

    How many times bigger is main voltage than the voltage of car battery?

    is it: 240v/12v ?

    or do we need to convert 240v AC to DC first than divide it to 12v?
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    Re: How many times bigger is main voltage than the voltage of car battery?

    Quote Originally Posted by junjun44 View Post
    Hi this is my home work:

    How many times bigger is main voltage than the voltage of car battery?

    is it: 240v/12v ?

    or do we need to convert 240v AC to DC first than divide it to 12v?
    You can't convert an AC voltage to a DC voltage. The concept makes no sense. On the other hand you can find the rms value of the AC voltage...

    -Dan
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