For the simplest case you have a feedback resistor and an input resistor. The non-inverting input is connected to ground. 1. If the gain is only dependent on the ratio of the resistors, is there some sort of advantage in picking higher valued resistors (in the k range) rather than 10 or 20 ohms? The current drawn from the output will be completely dependent on the load resistance anyways. 2. What is the point of connecting a resistor in between the non-inverting input and ground? Thanks!