An electric circuit consists of three resistances (10 Q, 15 Q and 60 0 respectively) joined in parallel and then connected in series with a fourth resistance. The whole network is supplied at 50 V dc and the power dissipated in the 15 C) resistance is 76 W. Determine the values for the following variables: (a) Equivalent resistance for three resistances connected in parallel (b) Voltage applied to resistances joined in parallel (c) The fourth resistance (d)The total power dissipated in the group (5 marks) (5 marks) (5 marks) (5 marks) [Total marks: 20] Question 2 For the circuit given in Figure Q2: (a) Use mesh analysis to determine the currents through resistors R1, R2 and R3. (12 marks) (b) Calculate the voltages across resistors R1 and R3.