Electrical Engineering - Series Circuits - Discussion
Discussion Forum : Series Circuits - General Questions (Q.No. 2)
2.
A string of five series resistors is connected across a 6 V battery. Zero voltage is measured across all resistors except R3. The voltage across R3 is
Discussion:
51 comments Page 2 of 6.
Prakash pritam said:
9 years ago
From the law,
Input voltage = output voltage,
We have,
Vr1 + Vr2 + Vr3 + Vr4 + Vr5 = Vout = 6. All values are zero except Vr3.
=> 0 + 0 + Vr3 + 0 + 0 = 6,
Hence, Vr3 = 6.
Input voltage = output voltage,
We have,
Vr1 + Vr2 + Vr3 + Vr4 + Vr5 = Vout = 6. All values are zero except Vr3.
=> 0 + 0 + Vr3 + 0 + 0 = 6,
Hence, Vr3 = 6.
Sandeep Khandagade said:
9 years ago
According to Question resistors are in series.
And voltage drop in R1, R2, R4 & R5 are zero. Then,
1) Current will also zero in all resistors (V = IR). Because resistor having some resistance according to question.
2) Current in the series is Same so mean Current In R3 will also zero.
3) When current will zero so Vtg will be also Zero (V = IR).
And voltage drop in R1, R2, R4 & R5 are zero. Then,
1) Current will also zero in all resistors (V = IR). Because resistor having some resistance according to question.
2) Current in the series is Same so mean Current In R3 will also zero.
3) When current will zero so Vtg will be also Zero (V = IR).
Sirkudos said:
9 years ago
The answer 6v is correct because resistance connected in series have different voltage with the same current. In reference to the question, the rest of the voltage are the same but R3 is different. Note only 6V that is the supply voltage.
Gayathri Ramesh said:
9 years ago
In open circuit there will b zero current so voltage drop is equal to the actual voltage. Since are 1, 2, 4, 5 are zero resistance the net voltage at R3 is 6. Which also means the current in series is same.
Gopalan said:
9 years ago
Question not having any relevance.
Correct answer for this question is zero.
In a series circuit the voltage drop zero across all resistance except R3 it means this is an open circuit.
Also, it can persume Battery dead. Other circuit shorted should not be a correct argument.
For justifying the given answer you can find out the way.That is all.
Series circuit voltage zero means no current so open circuit or batter dead.
Answer is zero.
Correct answer for this question is zero.
In a series circuit the voltage drop zero across all resistance except R3 it means this is an open circuit.
Also, it can persume Battery dead. Other circuit shorted should not be a correct argument.
For justifying the given answer you can find out the way.That is all.
Series circuit voltage zero means no current so open circuit or batter dead.
Answer is zero.
Jagadesh said:
9 years ago
If the voltage across any resistor is zero that means resistor is shorted and the whole voltage appears across the resistor active in the circuit.
As in the question it is give that R3 is active so the whole voltage appears across it. The voltage give in question is 6v.
Therefore answer: 6V.
As in the question it is give that R3 is active so the whole voltage appears across it. The voltage give in question is 6v.
Therefore answer: 6V.
Kshirod said:
10 years ago
If the resistors are open then how can we measure voltage across R3?
Kondiba gaike said:
10 years ago
I known given voltage are same in all resistors i.e. 6v.
Srikanth said:
1 decade ago
The value of are is zero no voltage drop then same we flow in circuit.
Douglas said:
1 decade ago
Current flowing through resistors is same and let it be I. Voltage drops across resistors rated zero will be i*r which will be equal to zero. The voltage across resistor 3 will be 6 volts.
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