How can I find the rate at which heat is generated in the resister in an electric circuit connected to a 40-ohm resistor that is embedded in a .20 kg solid substance in a calorimeter. The external portion of the circuit is connected to a 60-volt power supply. I calculated the current and it is 2400 A. Now I need to figure out what the "rate at which heat is generated in the resistor". I can figure out the rest of the problem once I have this information, but I don't know how to find it? Thanks.