All Questions
10
questions
0
votes
1
answer
290
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How to calculate for the voltage across resistor R4 and R6 using the operating point values? [closed]
This is the schematic diagram for the circuit that I need to solve. All I need to know is if it is possible to solve for the voltage across resistor r4 and r6 with all the given operating point values....
0
votes
1
answer
545
views
Why does the resistance of a brushed Dc motor from an experiment kit vary?
I am currently performing an experiment in which I measure the Current and Voltage of a motor that experiences changes in load. I am using a 3V (3V battery) supply however the voltmeter's (connected ...
0
votes
1
answer
44
views
Thevenin Resistance query
I have an amplifier model circuit where I've determined the load (speaker) voltage (using its peak power output and its resistance) and measured the open-circuit voltage.
How can I work out the ...
- 23
-1
votes
2
answers
303
views
i have a question about the analogy between Hydraulic system and Electrical system
In Hydraulic system the Pump out oil "" flow "" , It doesn't out pressure , well what create the pressure is the " restriction " or "" orifice "" or "" resistance "" .
In Electrical system , The ...
- 1
-2
votes
2
answers
344
views
Problem with resistance,electric circuit etc. etc.
In which way a resistance is to be connected with a bulb labelled 120W-60V when it is connected with 220V DC source so that maximum illumination with proper security is maintained? What is the ...
- 7
0
votes
2
answers
963
views
Calculating voltage in a simple circuit
If I had a 12V battery and wanted to use an LED that used 2V and 20mA, then I need a resistor that will drop 10V and provide enough resistance to produce a current of 20mA.
Therefore I would use R=V/I ...
- 345
1
vote
3
answers
3k
views
Why the diode has higher impact on dc characteristics than ac?
Consider this circuit which consists of a DC bias and an AC source connected with a diode and resistor:
Source: Boylestad and Nashley book 11th ed.
Using superposition theorem the circuit was solved....
- 783
-1
votes
2
answers
931
views
How does one determine the voltage of a node?
This sounds like a very straightforward question, and probably has an obvious answer. I've read a section in a physics book on electricity, I've read a textbook on DC and this simple concept seems to ...
- 717
0
votes
1
answer
715
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How do I calculate voltage on a multi-powered DC circuit where all ends go to ground?
I'm writing software that will calculate the correct voltage on each component, given the state that the DC system is currently in (ex. what power sources are on, what relays are open, fuses popped, ...
- 449
-2
votes
2
answers
16k
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Behavior of capacitor with infinite capacitance at steady state (DC analysis & AC Analysis)
What is the behavior of the capacitor below at steady state (DC/AC Analysis)?
simulate this circuit – Schematic created using CircuitLab
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