Electrical companies charge you based on how much energy you use ... So this means they first calculate the total Power based on the voltage they give each household and the current drawn... P = IV(adsbygoogle = window.adsbygoogle || []).push({});

but then they have to multiply the total power consumption times the time it is on in order to find the total energy consumption....

How can they know this data? How can they know how long a lightbulb or the television was on?

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# Electrical Companies and time

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