Hello, I am trying to get my head around biasing. I do understand the principles. In the attached circuit the Collector current is 2.5mA and the collector resistor is 1K. Therefore my circuit here is biased at 2.5V. The power supply is 5V. So that would give a 2.5V drop over the collector resistor. The bit I dont understand is where does the other 2.5V drop come from to bring the VCC down to zero potential ? Thanks for any help. This is just elementary stuff but that is where I am at.