Скачать или смотреть X Physics In a domestic circuit five LED bulbs are arranged as shown. The source voltage is 220 V

10th Science CBSE PYQ 2024

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 :

(a) State what happens when
(i) key K1 is closed.
(i) key K2 is closed.

(b) Find the current drawn by the bulb B when it glows.

(c) Calculate
(i) the resistance of bulb B, and
(ii) total resistance of the combination of four bulbs B, C, D, and E.

OR

(c) What would happen to the glow of all the bulbs in the circuit when keys K1 and K2 both are closed and the bulb C suddenly get fused? Give reason to justify your answer.
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