1. The problem statement, all variables and given/known data A 50 ohm resistor carries a current of 250 mA and is maintained at a constant temperature of 303K by thermal contact with a heat sink. Calculate the entopy change of i) the resistor, and ii) the universe, if the current flows for 30 seconds. 2. Relevant equations dS >= 0? 3. The attempt at a solution I'm not sure how to attempt this question for a physical problem. Up until now I've been restricted to doing questions of this type based upon ideal gases, so I'm not sure how I would apply that to a physical system like this. Any hints anyone?