Looking at this diagram (http://img441.imageshack.us/i/zxc.png/ in case above doesn't show) why doesn't the current simply go directly down to the ground symbol instead of doing the loop?
Similarly,
http://img138.imageshack.us/i/zxcvb.png/
why doesn't the current travel from the V+ side of the power source directly downwards to the ground on the path to least resistance instead of taking the side branches?
Sorry these are probably dumb questions but I'm starting EE program in the fall at the U and wanted to start studying during the summer before the classes. Up to around Ch.8 in the book the ground was placed in positions that make sense(ie. last after all resistors, not first up) but I must have missed something along the way and I'm stumped. My understanding is current always travels in the path of least resistance to the ground(V-), but in these diagrams it loops around.