1 a) Use the diagram below to calculate the equivalent resistance (Req). Show all your workings. (5) B REQ R - 602 R=802 R=402 www R = 802 a N R=402 b) Consider the diagram shown below: Vab V Rg=1002 www Re-602 R=602 www R = 80 r=222. E= 12 V b A R0=202 R=0 Use the diagram given above to answer the questions. Calculate: (a) the current (b) the voltage (c) the rates of energy conversion and energy dissipation in the battery (d) the net power (2) (2) (2) (2)