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QUESTION 1 (Part 1) A 10k A resistor is connected in series to a 15 V DC voltage supply. a) Calculate the current through this resistor. (1) b) After a second resistor is placed in parallel with the first, the current from the positive terminal of the voltage supply increases to four times its original magnitude. Calculate the resistance of this second resistor. (3) c) Determine the power rating of this new circuit. (1) (5 marks) (Part 2) Consider the circuit diagram, shown below. A 10 kΩ C С 6 ΚΩ 200 V 10 ko 2 k2 ww min -7 ΚΩ w B 9 ko D 3 ΚΩ E a) Determine the equivalent resistance of the circuit between the terminals A and B. b) Calculate the total current from the positive terminal of the voltage supply. (1) c) If the electric potential of nodes A and B are VA = 200 V and V, =0V, calculate the electric potential at nodes CD and E. (4) d) Calculate the magnitude of all currents flowing towards and away from the node marked "C". Show that Kirchhoff's Current Law holds true for this node. (6) (15 marks)