Hi everyone, I'm having trouble with this problem from my physics class. It seems like it should be really simple, but I can't seem to figure out where to go with it. The problem reads as: Consider the case of a toaster oven and a light bulb connected to the same household circuit. Such elements are connected in parallel. If there is significant contact resistance (R_c) in the common part of the circuit, then the light bulb will dim when the oven turns on. Assume that one day you observe that the lamp in your room dims to approximately half of its original brightness when a toaster oven on the same circuit is turned on. Estimate the contact resistance. I had to make some assumptions, so I assumed the light bulb had P = 60 W and the oven had P = 1200 W. I also know that since the brightness of the bulb is about half, then then power must be half too (I = P/A, A is constant). I wrote down some equations that I know should be true, but I'm not sure where to go next. If anyone could steer me into the right direction, it would be greatly appreciated!