1. The problem statement, all variables and given/known data A secondary cell having an e.m.f. of 2V and an internal resistance of 1ohm is connected in series with a primary cell having an e.m.f. of 1.5V and an internal resistance of 100ohm the negative terminals of each cell is connected to the positive terminal of the other cell. A voltmeter having a resistance of 50ohm is connected to measure the terminal volatage of the cells. Calculate the voltmeter reading and the current in each cell. Ans given by book:72.8mA, 34.3mA, 1.93V 2. Relevant equations Kirchoff voltage law. 3. The attempt at a solution I can not understand how 2 cells in series can have a different current ? What concept am I missing ?