# Is internal resistance of cell part of the equivalent resistance of the network of resistors?

Do we include the internal resistance of cell while calculating equivalent resistance of network? Take, for instance, the question given. Do we include the 1 ohm internal resistance while calculating equivalent resistance of the network?

• I've added the homework-and-exercises tag. In the future, please use this tag on this type of question. – Ben Crowell Feb 24 at 18:48

From the wording "A network [...] to a battery with internal resistance" I would say the network is everything except the battery, where the battery consists of the ideal voltage source and the $$1\,\Omega$$ resistor. It is impossible to know for sure though what the author really meant.