Question

Three incandescent bulbs of 100 W each are connected in series in an electric circuit. In

another circuit another set of three bulbs of the same Wattage are connected in parallel
to the same source.


a) Will the bulb in the two circuits glow with the same brightness? Justify your answer.


b) Now let one bulb in both the circuits get fused . Will the rest of bulbs continue to

glow in each circuit.​

Answer 1

Answer:

a, yes

b,no the rest of the bulbs will not continue in series connectiin

Answer 2

Answer:

(a) Will the bulb in the two circuits glow with the same brightness? Justify your answer.

Ans. Voltage gets divided in series combination. So bulbs in series combination will glow with less brightness. Voltage does not get divided in parallel combination, so bulbs in parallel combination will glow with more brightness.

(b) Now let one bulb in both the circuits get fused. Will the rest of the bulbs continue to glow in each circuit? Give reason.

Ans. In case of series combination, fault in even a single component will break the circuit.

So, when one of the bulbs gets fused: another bulb would continue to glow.