Uchedia Cooper al Exam 202210 D Back Up Final Exam 2 - Structured questions The diagram below shows an electrical circuit with a 12 V power supply and a number of resistors 12V 60 30 20 40 (a) For this circuit (1) Calculate the combined resistance of the 2 Q and the 4 Q resistors in series [1 mk] (1) Calculate the combined resistance of the 3 0 and the 6 ( resistors in parallel [2 mks] (b) Calculate the reading of the ammeter, [2 mks] (c) Determine the potential difference across the 4 0 resistor [3 mks] (d) Determine the current passing through the ammeter if the 4 0 resistor became damaged and open (does not allow current to flow through it) [2 mks]\f