R1 R2 aow R 3 R2 R4 bow R5 R1 a) Find the equivalent resistance of the combination of resistors shown in the figure above. R1 = 20, R2 = 40, R3 = 60, R4 = 10 and R5 = 60. 8.83 0 b) If a potential difference of 25 V is applied across points a and b, find the potential difference across R3