1. The problem statement, all variables and given/known data The question reads: The following graph shows the relationship between voltage V and current I, through a particular electrical component. (The line in graph is straight, not showing properly in the photo) What is the electrical resistance of this component when the potential difference across it is V2 volts, and how does this resistance change between V1 and V2? 2. Relevant equations 3. The attempt at a solution This questions was in an exam and there are conflicting answers. I'd like to know what others think the answer is and why.