1. The problem statement, all variables and given/known data 2. Relevant equations V=IR KCL/KVL 3. The attempt at a solution I have a similair problem to this one in my notes and I know how to solve this circuit, but I am confused on some parts of it. First, at V1 why can we say the voltage there is 0V? Is it because it is connected to the ground (-) of the op amp and we can say that the potential is 0V at that point? Also, why is the op amp drawn like that? Why is the (+) on the bottom go to ground? What does that mean exactly? And V2 is also equal to 0 but I am not sure why. Is it for the same reason I said above?