Three bulbs each having power P are connected in series in an electric circuit. In another circuit another set of three bulbs of same power are connected in parallel to the same source.
i. Will the bulbs in both the circuits glow with the same brightness? Justify your answer.
ii. Now let one bulb in each circuit get fused. Will the rest of the bulbs continue to glow in each circuit? Give reason.
i. All bulbs will not glow with the same brightness. In series, they will glow dull as all the three bulbs do not get the equal potential difference, but as they get it in parallel, they will glow brighter in parallel.
ii. If one of the bulb fuses, all will glow continuously in parallel as they all have a different circuit, and their circuit is still active, but in series all will stop glowing because the circuit will break after one bulb is fused.