Question

7.Three incandescent bulbs of 100W each are connected in series in an electrical circuit.
In another circuit another set oi three bulbs of the same wattage are connected in
parallel to the same source.
(1) Will the bulb in the two circuits glow with the same brightness? Justify your answer.
(1) Now let one bulb in both the circuits get fused. Will the rest of the bulbs continue to
glow in each circuit? Give reason.​

Answer 1

Explanation:

no since in series combination the current is not going to divide and therefore the bulb will glow dimly..

however in parallel combination the current is going to be divided si each appliance will act independently

2 if one bulb fuses in series combination the all the bulbs will not glow since in series the current is same

However in parallel if one goes fused the rest will continue to glow since the current gets divided and each acts independently...

hope it helps...

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.