Question

Three bulbs of 100 W each are connected in an electric circuit. If any one of the bulb fails,what would be the effect on the brightness of the other two bulbs if:
All the three bulbs are connected in series.
All the three bulbs are connected in parallel.
They are connected as given in the following figure and any one of the bulb connected in parallel fuses.
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Answer 1

Answer:

Case 1. All the bulbs will not glow

Case 2. Only the fused bulb will not glow and the other bulbs will glow

Case 3. Only the fused bulb will not glow and the other bulbs will glow

Answer 2

Answer:

all bulbs glow follow me