Electronics - Series Circuits - Discussion
Discussion Forum : Series Circuits - General Questions (Q.No. 20)
20.
While putting three 1.5 V batteries into a flashlight, you put one in backwards. The flashlight will be ______________.
Discussion:
18 comments Page 1 of 2.
Hitesh Daka said:
8 years ago
It depends on which we put in backwards.
Normal condition: +- +- +- .
If : +--++- then dim light.
If +-+--+ then it not work.
Normal condition: +- +- +- .
If : +--++- then dim light.
If +-+--+ then it not work.
(2)
Bujjji said:
9 years ago
In backwards, cell not working because polarities change.
(1)
NAGENDRA said:
1 decade ago
But ground won't connect. How it will on?
(1)
Kanna said:
1 decade ago
ITs simple...
3 bateries are there... if the middle one is backwards it act as wire between 1st and 3rd.. so dimmer than normal...
in other case:battery backwards in 1st or 3rd the light will be off...
3 bateries are there... if the middle one is backwards it act as wire between 1st and 3rd.. so dimmer than normal...
in other case:battery backwards in 1st or 3rd the light will be off...
Deepi said:
7 years ago
What happens if same condition occurs in parallel connections?
Keerthi said:
9 years ago
When inserting batteries into any device one battery direction will be opposite to each other, right?
Then in inserting 3 batteries one will be in opposite to the other two na.
So what is wrong? I can't understand. Please explain.
Then in inserting 3 batteries one will be in opposite to the other two na.
So what is wrong? I can't understand. Please explain.
Hiren said:
1 decade ago
By doing so.
Final applied voltage to torch is 1.5 Volt.
When it is inserted in correct manner it should be 4.5 Volts.
So theoretically, 1.5 Voltage is provided to torch so it will be slightly lighting is answer.
Total voltage= +1.5v + 1.5v - 1.5v = +1.5v
Final applied voltage to torch is 1.5 Volt.
When it is inserted in correct manner it should be 4.5 Volts.
So theoretically, 1.5 Voltage is provided to torch so it will be slightly lighting is answer.
Total voltage= +1.5v + 1.5v - 1.5v = +1.5v
Yagnik pandya said:
1 decade ago
Yes. Answer is B.
Because see below.
(+-) (+-) (+-).
If we put 3 of the batteries in this polarity then voltage will be added.
But as given that one is inverted so direction will be:
(+-) (+-) (-+) so opposite polarity will reduce the voltage to zero. So ultimately voltage will be reduced and battery will give dimmer light.
Because see below.
(+-) (+-) (+-).
If we put 3 of the batteries in this polarity then voltage will be added.
But as given that one is inverted so direction will be:
(+-) (+-) (-+) so opposite polarity will reduce the voltage to zero. So ultimately voltage will be reduced and battery will give dimmer light.
Atul thakur said:
1 decade ago
Brothers this is rubbish. Of Course the torch would be off as by changing polarities doesn't means battery is shorted for a circuit to complete the path. Also I have tested it practically it doesn't work.
Priyanka said:
1 decade ago
If the question means that one of the batteries in put inverted into the flashlight then answer should be "c". ie, flashlight will not work in this condition.
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