- #1
naivy
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Homework Statement
Homework Equations
The Attempt at a Solution
I got V1=18V
Here's my work:
How to Calculate Voltage in a Circuit?
- Thread starter naivy
- Start date
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- Voltage
In summary, the conversation involves a discussion about solving a circuit problem using Kirchhoff's Voltage Law and V=IR. The final answer obtained by one person is different from the other's, leading to a request for verification and clarification. The conversation also touches on the use of an ideal ammeter and the impact of its zero resistance on the circuit.
I got V1=18V
Here's my work:
- #2
omoplata
- 327
- 2
Can't see the image statement. Imgur.com says image does not exist.
Can see your work though. Is that line connecting + and - a conductor?
Can see your work though. Is that line connecting + and - a conductor?
- #3
naivy
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Can you see that now?
- #4
omoplata
- 327
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Yup.
- #5
omoplata
- 327
- 2
I applied Kirchhoff's Voltage law and V=IR to solve this. The final answer I got is different from yours.
How did you get those first two lines on the left?
How did you get those first two lines on the left?
- #6
naivy
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I actually got a different answer just now too. I got V1 = 37.3333V
- #7
omoplata
- 327
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Yeah, that's what I get.
- #8
naivy
- 40
- 0
Would it be possible for you to check my answer to another problem as well?
Thank you!
I get 10.6666mA
Thank you!
I get 10.6666mA
Last edited:
- #9
omoplata
- 327
- 2
Need to clear one thing up before I try.
I_s is an ammeter, right?
Ideal ammeters have zero resistance. Since a resistance value is not given for I_s, it has to be assumed to be an ideal ammeter. Then the current is going to bypass the 8k and 4k resistors.
I_s is an ammeter, right?
Ideal ammeters have zero resistance. Since a resistance value is not given for I_s, it has to be assumed to be an ideal ammeter. Then the current is going to bypass the 8k and 4k resistors.
- #10
naivy
- 40
- 0
Is is a current source.
- #11
omoplata
- 327
- 2
Oh, OK.
FAQ: How to Calculate Voltage in a Circuit?
What is voltage?
Voltage is a measure of the electric potential difference between two points in an electric field. It is often described as the "pressure" of electricity, as it determines the amount of energy that can be transferred between two points.
How is voltage measured?
Voltage is measured using a device called a voltmeter, which is connected in parallel to the circuit or component being measured. The unit of measurement for voltage is volts (V).
What is the difference between voltage and current?
Voltage and current are both important components of electricity, but they are not the same thing. Voltage is the potential difference that causes current to flow, while current is the flow of electric charge through a conducting material. Voltage is measured in volts (V) and current is measured in amperes (A).
How does voltage affect electronic devices?
Electronic devices require a specific amount of voltage to function properly. If the voltage is too high, it can damage the device, and if it is too low, the device may not work at all. It is important to ensure that the voltage supplied to electronic devices is within the recommended range.
Can voltage be changed?
Yes, voltage can be changed using devices called transformers. These devices can step up or step down the voltage to the desired level. It is important to use the correct voltage for each device to ensure proper functioning and prevent damage.