Amplifier theoratical max rated output power based on supply voltage

[theAnonymous1]

Originally Posted by AndrewT

if you can remember that
I = V / R - Ohm's law
and that
P = I * V
then all the others follow exactly from those two equations.
No reason to be either lazy nor stupid.
But frequent repetition may well be required to commit this to permanent memory, for it to stick. Just like a PC:- RAM is volatile and HDD can be almost permanent, if we know where the index to the library/files is kept.

My memory is extremely volatile.

It took a long time to get this image burned into my EEPROM.....

[Nico Ras]

The formula is:

P[RMS] = Ec^2/(8*Rl) where:

P is the RMS power in watts

Ec is the supply voltage. In your case, is either 10V or +/-5V=10V (same thing)

Rl=Load resistance in ohms.

In your case, the RMS power is 10^2/(8 * 10) = 1.25W

There exists no such thing as RMS watt

[wwenze]

Originally Posted by theAnonymous1

My memory is extremely volatile.

It took a long time to get this image burned into my EEPROM.....

Strange, I had P = V * I etched into my brain since I was a child. Must be my father showing me the utility bill.

[AndrewT]

Originally Posted by wwenze

Strange, I had P = V * I etched into my brain since I was a child. Must be my father showing me the utility bill.

yes that's what it says.
P=I*E
I=P/E
E=P/I

where
P=power
I=rms current
E=rms voltage