it is true. a battery has its curren flowing from both terminals, be t positive or negative. they can both be measured by the ammeter but the thing about dissipating the resistor im not sure. but power does travel fast and is is not a form of electricity but a term used for amount of ... in a...
cheak your textbook?
haha go on the net to find the equation. if im not wrong it is the amount of time you use \times\ the amount of eletricity use. then average it out to the number of days u use the com.