Linked Questions

-2
votes
1answer
73 views

how current is calculated [duplicate]

simulate this circuit – Schematic created using CircuitLab In the above diagram what is the current through 10ohms resistor. Can we apply superposition principle.
6
votes
4answers
5k views

Short circuit = zero voltage?

Reading this question and its answers (as well as other questions), it seems that in an idealized short-circuit with zero resistance, one concludes the voltage is zero. This seems completely wrong. ...
1
vote
2answers
996 views

Current step to LC circuit

An inductor is a device which adjusts its voltage to keep the same current flowing through. However, the current exponentially decays when there is no source any more. Similarly, a capacitor is a ...
0
votes
3answers
1k views

Transient analysis with current source

Given Find: “v” and “i” for t>0 I found init conditions: i(0-)=i(0+)=0A v(0-)=v(0+)=0V i(infinite)=3A v(infinite)=4*3A = 12V To obtain transient response we need remove Current Source with ...
1
vote
3answers
366 views

voltage\current sources

I read in a book that image-1 is not a valid connection since you apply on the same two terminals a and b different voltages however image -2 is said to be a valid connection and I don't understand ...
0
votes
3answers
283 views

voltage across low resistance and short circuit

simulate this circuit – Schematic created using CircuitLab The voltage across R ohm should be always V volts for every single value of R except R=0 and at that resistance the current through R ...
3
votes
2answers
186 views

Is there a way to solve this circuit using superposition or KVL?

simulate this circuit – Schematic created using CircuitLab Using KVL : \$-1 + 100(I_a+I_b) = 0\$ \$-1 + 100(I_a+I_b) = 0\$ In both loops I get the same equation, so I cannot know how much ...
0
votes
4answers
204 views

Current and voltage sources?

simulate this circuit – Schematic created using CircuitLab From what I understand, the magnitude and direction from an independent current source is constant. What would happen in the circuit ...
0
votes
2answers
189 views

What does explain that the sum of voltage of the batteries connected in parallel is same?

Below is an explanation attached from my textbook: It explained the batteries connected in series very well as seen. Honestly, I've been researching about batteries connected in parallel on my ...
-1
votes
1answer
54 views

Short and Open Circuit Calculation

Suppose there is a ideal voltage source which can provide infinite power if that is needed in an ideal scenario. Now suppose a resister R is connected across it and the e.m.f is E. So by ohm's law the ...