There are 4 identical cells each with e.m.f 3.0V and internal resistance of 1 ohm.
With all 4 cells in series, would it be 4 x 3 = 12V ?
And would the internal resistance be 4 x 1 = 4ohms ?
With all 4 cells in parallel, would it be 1/3 + 1/3 1/3 + 1/3 = 4/3 = 1.33V ?
How would I work out the internal resistance?
If they are short circuited and the terminals are connected by a thick wire (neglible resistance), what would be the current? And which battery would go flat quicker? Parallel or series?