Problem appears both here and in the .PDF version:
http://www.allaboutcircuits.com/vol_1/chpt_2/3.html
I think there is a tiny glitch in your wording on the above HTML page and on pg 43 of the PDF Volume 1 (DC). In the text:
"Using algebra again to manipulate the formulae, we can take our original power formula and modify it for applications where we don't know both voltage and resistance: [******* I THINK YOU MEAN "voltage and current" in the previous sentence.*******]
If we only know voltage (E) and resistance ®:
..............
If we only know current (I) and resistance ®:
http://www.allaboutcircuits.com/vol_1/chpt_2/3.html
I think there is a tiny glitch in your wording on the above HTML page and on pg 43 of the PDF Volume 1 (DC). In the text:
"Using algebra again to manipulate the formulae, we can take our original power formula and modify it for applications where we don't know both voltage and resistance: [******* I THINK YOU MEAN "voltage and current" in the previous sentence.*******]
If we only know voltage (E) and resistance ®:
..............
If we only know current (I) and resistance ®: