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 3 of 6.
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.
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.
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).
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.
Kola ashok kumar said:
9 years ago
The answer is 6v.
> voltage is zero when current is zero or resistance is zero.
Current cannot be zero.
So resistance is zero, may be a short circuit across the resistors.
> voltage is zero when current is zero or resistance is zero.
Current cannot be zero.
So resistance is zero, may be a short circuit across the resistors.
Swati said:
8 years ago
Yes, you are correct @Abdul.
Rutesh said:
1 decade ago
Simple,
v1+v2+v3+v4+v5 = V,
ir1 + ir2 + v3 +ir4 +ir5 = 6,(V=6),
As per @Satosh formula,
We get v3 = V = 6v.
v1+v2+v3+v4+v5 = V,
ir1 + ir2 + v3 +ir4 +ir5 = 6,(V=6),
As per @Satosh formula,
We get v3 = V = 6v.
Ramesh said:
1 decade ago
IF CURRENT FLOWS THROUGH R3 IS ZERO, THERE MAY NOT BE ANY VOLTAGE DROP i.e v=ixr3 => 0xr3=0.when r1, r2, r4,r5=0,and r3=6ohms , current=1amp, then v3=ixr3=> 1x6= 6ohms.
Seyran said:
1 decade ago
In series connected resistors, the flowing current supposed to be equal. If you are measuring across any of the resistors, and the meter reads 0v, it means answer A is right. If you are measuring with the respect to common terminal, 6v reading means that R2 resistor is broken. Explanation is not correct.
Santhosh said:
1 decade ago
6volts given to resistor(r1(0)+r2(0)+r3+r4(0)+r5(0))= we obtain the same six volts at the end.
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