AC or DC power calculation

[harrison2987]

Hi Guys,

Is the calculation different when working out Power consumption of a ystem with a DC supply rather than an AC supply?

I know P=I x V

So i can do P = 2A x 230V AC

But is this different with a 12V DC power supply???

Thanks in advance!!!

 

[Silly Sausage]

It's the same.
AC values are usually quoted as root mean square quantaties, I'll let you google that.

 

[harrison2987]

So bascially when working out power consumption for systems that may have AC or DC both AC and DC power supplys i can use the same formula of P=IxV and no need to change anything?

So,

P=IxV P=2A x 230V AC = 460W

or

P=IxV P=2A x 12V DC = 24W


Both are correct??

- - - Updated - - -

It's the same.
AC values are usually quoted as root mean square quantaties, I'll let you google that.

Sorry mate was meant to add your reply, am i right in thinking the above?

 

[Outspoken]

All basic electrical calculations that have no frequency dependency are the same for DC as they are for AC systems.

Try this..