A 12 V battery of negligible internal resistance is connected in series with two resistors of resistances 4 Ω and 8 Ω.
(i) Draw a neat labelled circuit diagram showing the correct position of a voltmeter that will read the potential difference across the 8 Ω resistor.
(ii) Calculate the current flowing through the circuit.
(iii) Calculate the reading shown by the voltmeter.