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Sahasra Shanker from KV IIT, Chennai
Subject :NSO    Class : Class 6

The diagram shows identical lamps X and Y connected in series with a battery. The lamps light with normal brightness.

If a third lamp Z is connected in parallel with lamp X, then what will happens to the brightness of the lamp Y?

A Brighter than normal
B Normal
C Dimmer than normal
D Very dim (cannot be seen)


why?

Ans 1:

Ishaan Roy from Sri Chaitanya Techno School, Bengaluru
Class : Class 10

Ans 2:

Mitra Maiti from Techno India Group Public School, Bolpur Prantik
Class : Class 6
The correct answer is B as the bulb Y is in straight series and there is no change of current passing through it. And the curent gets equally divided among X and Y.

Ans 3:

Mitra Maiti from Techno India Group Public School, Bolpur Prantik
Class : Class 6

Ans 4:

Parshti Bajpai from Modern Public School, ALWAR
Class : Class 7
I thought of B but after checking the solution I got it that it's A only, so the answer is A

Ans 5:

Agustya vaid from Somerville school vasundhara enclave, Delhi
Class : Class 7
i agree with him too

Ans 6:

Raghav from Shalom Hills International school, Gurgaon
Class : Class 6

Ans 7:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
I agree with omkar,maitri,abhid etc all who are saying option B because we can read that another bulb 'Z' is connected in "PARALLEL" and not in "SERIES" and as we know , if we connect many bulb with same battery in a parallel circuit , they will give same brightness if the one bulb was connected , but the consumption of battery will also increase.So, according to me , there will be no change in bulb y (NORMAL)ans should be : option "A"

Ans 8:

Abhishri Dwivedi from gems modern academy , Dubai
Class : Class 6
I think (A) is the answer because the explanation in the solution makes complete sense but technically it could also be (B)

Ans 9:

Aadvik saini from Mvn sector 17, Faridabad
Class : Class 8
b is answer

Ans 10:

Abhaid Goel from Indian School , Muladha
Class : Class 10
correct answer should be option B because there is no change in the current passing through lamp Y.

Ans 11:

Parthvi Mishra from DPS Nacharam, Hyderabad
Class : Class 6

Ans 12:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10
*as if the one bulb was connected

Ans 13:

Omkar Deshmukh from phoenix greens international school, Hyderabad
Class : Class 7
It should be B as no change of current is there in Y.

Ans 14:

Irresh Vijay from NPSI Singapore, Singapore
Class : Class 8

Ans 15:

Sara Kapoor from Manav Rachna International School charmwood, Faridabad
Class : Class 7
it is b only not c pls report an error

Ans 16:

Ryan Geo from Birla Public School, DOHA
Class : Class 7

Ans 17:

ARUNAV from DPS VINDHYANAGAR, VINDHYANAGAR
Class : Class 10

Ans 18:

Dushyant Singh from Shree Ram Centenial School, Indore
Class : Class 9
a is the correct answereverywhere

Ans 19:

Anudeepti Dutta from Delhi Public School-Bangalore East, Bangalore
Class : Class 9
i think it is b

Ans 20:

shreyash from amaatra, bangalore
Class : Class 3
yaa me 2 i think its b\

Ans 21:

khushi Joshi from Svkm , Mumbai
Class : Class 10
I agree with Abhaid Goel.

Ans 22:

Ashmi Narkar from The Shishukunj International School, Jhalaria Campus, Indore
Class : Class 9
I think B or C is correct. Master Answer explain this

Ans 23:

Arunima from dps, Bharuch
Class : Class 6
Shouldn't the answer be option B, because it makes the most sense. No electricity or amps or power is taken away from bulb Y. Why is it answer A?

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