# Electronic Circuit Question.

#### RRITESH KAKKAR

Joined Jun 29, 2010
2,829
how to know or calculate this.
Which component is shorted? #### RRITESH KAKKAR

Joined Jun 29, 2010
2,829
The current through R1 will be: 48mA calculated. Last edited:
• sandeep mukke

#### RRITESH KAKKAR

Joined Jun 29, 2010
2,829
Which component is open? #### hp1729

Joined Nov 23, 2015
2,304
how to know or calculate this.
Which component is shorted? Not that resistors short out, but If R1 were shorted you would not see that 2.4 Amps through the following stages. Likewise R2 and R3, so it must be R4.

• RRITESH KAKKAR

#### RRITESH KAKKAR

Joined Jun 29, 2010
2,829
In a 20 Vac series RC circuit, if 20 V is measured across the resistor and 40 V is measured across the capacitor, the applied voltage is:

#### RRITESH KAKKAR

Joined Jun 29, 2010
2,829
In a 20 Vac series RC circuit, if 20 V is measured across the resistor and 40 V is measured across the capacitor, the applied voltage is:
i got the answer but don't understand 20Vac meaning here. #### RRITESH KAKKAR

Joined Jun 29, 2010
2,829
What is the angle theta value for a 5.6 F capacitor and a 50-ohm resistor in series with a 1.1 kHz, 5 Vac source?

After solving:
P Active power across R=0.5W
Q Reactive C= 0.967VAR
So, S=√(P²+Q²)
S=1.10VA

cosΦ=Base /hyp.
cosΦ=0.5/1.10=62.9

#### Hypatia's Protege

Joined Mar 1, 2015
3,226
how to know or calculate this.
Which component is shorted? First you're going to have to tell me what the rectangles represent?   If ammeters what is their terminal to terminal resistance?

Last edited:
• RRITESH KAKKAR

#### Hypatia's Protege

Joined Mar 1, 2015
3,226
What is the angle theta value for a 5.6 F capacitor and a 50-ohm resistor in series with a 1.1 kHz, 5 Vac source?
@RRITESH KAKKAR --- You know full well how to calculate reactance and convert between rectangular and polar formats!   • RRITESH KAKKAR

#### RRITESH KAKKAR

Joined Jun 29, 2010
2,829
You know full well how to calculate reactance and convert between rectangular and polar formats!   Sinθ=imaginary(Reactive)/Real(Active)
Sinθ=0.967/0.5=1.9 error

#### RRITESH KAKKAR

Joined Jun 29, 2010
2,829
What is the phase shift between the voltage across the resistor and the voltage from the source? #### shteii01

Joined Feb 19, 2010
4,644
What is the phase shift between the voltage across the resistor and the voltage from the source? Convert C1 into impedance.
Now you have two "resistors" in series, also known as Voltage Divider.
Apply voltage divider formula to R1 to find voltage across R1 in complex form.
Extract the angle from the complex voltage of R1.

#### JoeJester

Joined Apr 26, 2005
4,390
Not that resistors short out, but If R1 were shorted you would not see that 2.4 Amps through the following stages.
Not to be particular but there is a little bit of difference between the 2.4 amperes you quoted and the 2.4 GigaAmperes the simulation shows. However, the troubleshooting was correct.

• Hypatia's Protege

#### JoeJester

Joined Apr 26, 2005
4,390

#### WBahn

Joined Mar 31, 2012
26,466
RRITESH,

PLEASE, one problem at a time (in a given thread). You posted several problems and have created utter chaos because no one can keep track of which problem a given response is for.

Start ONE thread on ONE problem, provide YOUR best attempt to solve that ONE problem, and focus on that ONE problem until you understand the solution.

• Hypatia's Protege

#### WBahn

Joined Mar 31, 2012
26,466
how to know or calculate this.
Which component is shorted? This makes no sense at all. Leaving aside the fact that your ammeters are should 2.4 GA (i.e., 2,400,000,000 amperes), the fact that they are all the same means NO current is flowing downward through ANY of the resistors that are connected between meters. Hence R1, R2, and R2 are ALL acting like open circuits. Then assuming that your 2.400G should be 2.400m, R4 is behaving like a 5 kΩ resistor.

#### JoeJester

Joined Apr 26, 2005
4,390
@RRITESH KAKKAR

A more realistic problem for the first one would be stated like the attached as your simulations perfect supply is capable of GigaAmperes:

#### Attachments

• RRITESH KAKKAR

#### RRITESH KAKKAR

Joined Jun 29, 2010
2,829 How to know there is no output seen?
so, one does not know whether circuit working or not?

#### #12

Joined Nov 30, 2010
18,223
How to know there is no output seen?
4 outputs are seen. They are labeled as 12A after each amp meter.
so, one does not know whether circuit working or not?
YOU don't know, but only because you can't read the labels.

#### Hypatia's Protege

Joined Mar 1, 2015
3,226
but there is a little bit of difference between the 2.4 amperes you quoted and the 2.4 GigaAmperes the simulation shows.
Aye! That was my principal issue with the 'rectangular' blocks!   