Electronics - Parallel Circuits - Discussion
Discussion Forum : Parallel Circuits - General Questions (Q.No. 25)
25.
Which component is open?
Discussion:
17 comments Page 1 of 2.
Naveen said:
7 years ago
Perfect explanation, Thanks.
(1)
Subedar Sk shakya said:
1 decade ago
As we know in parallel circuits current divides& voltage remains same here the first amp meter shows 0.021A is the total current flowing through the R1,R2,R3,R4 and second one shows the current flowing through R3&R4
Now current reading for first one r1*r2/r1+r2=1*2/1+2 =2/3 I=V/R so(12)/(2/3)= 18ma now remains 3ma for second one so it clearly shows again I= V/R =12/4k=3ma So no need of R3.
Here R3 is Open.
Now current reading for first one r1*r2/r1+r2=1*2/1+2 =2/3 I=V/R so(12)/(2/3)= 18ma now remains 3ma for second one so it clearly shows again I= V/R =12/4k=3ma So no need of R3.
Here R3 is Open.
LAKHAN said:
4 years ago
Thanks for explaining @Mani.
Mani said:
6 years ago
Here we have a total current of the 21m amp,
Current across R1is.
I1=v/R1=12/1*10^3=12m amp
Current across R2 is;
I2=v/R2=12/2*10^3=6m amp,
Remaining current is 3m amp.
Then current across R4 is,
I3=v/R4=12/2*10^3=3m amp,
Hence resistor R3 is open circuit.
Current across R1is.
I1=v/R1=12/1*10^3=12m amp
Current across R2 is;
I2=v/R2=12/2*10^3=6m amp,
Remaining current is 3m amp.
Then current across R4 is,
I3=v/R4=12/2*10^3=3m amp,
Hence resistor R3 is open circuit.
Hima.V.M said:
8 years ago
It's a clear explanation, Thank you @Deepti.
Priya said:
10 years ago
@Kishu is right. We can't connect volt and ammeters directly because their will be short circuit.
Suresh b said:
1 decade ago
1 amp = 1000 mA.
0.021 A = 21 mA.
0.021 A = 21 mA.
Aneel said:
1 decade ago
How to calculate total current?
JAGANADHAN.R said:
1 decade ago
Hi,
Total current = 21mA.
Current required by R1 and R2 = 18mA.
So for remaining 3mA(21mA -18mA), R4 = 4K is enough no need for R3.
Thank you.
Total current = 21mA.
Current required by R1 and R2 = 18mA.
So for remaining 3mA(21mA -18mA), R4 = 4K is enough no need for R3.
Thank you.
Sasi said:
1 decade ago
If R3 get open means R4 also opened.
So, we can get a maximum output.
So, we can get a maximum output.
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