In a domestic circuit five LED bulbs are arranged as shown. The source voltage is 220 V and the power rating of each bulb is marked in the circuit diagram. Based on the following circuit diagram, answer the following questions: 4 4 22 W, 220 V K 1 K 11 B: 65 V 11 W:5611 W: 55 V 11 W:55 V 1 (a) State what happens when (1) key K₁ is closed. (ii) key K₂ is closed. (b) Find the current drawn by the bulb B when it glows. (c) Calculate (i) the resistence of the bulb B, and (ii) total resistence of the combination of four bulbs B,C,D and E.