Short circuit current distribution

AI Thread Summary
Adding a wire to create a short circuit can still result in a small current flowing through the load due to the resistance of the wires. The current distribution is influenced by the series load, with the total current shared between the short circuit and the remaining load based on their resistances. A perfect short circuit does not exist in practice, as there will always be a voltage difference across the short. This voltage difference leads to residual current flowing through the original load path, which has higher resistance. Understanding these dynamics is crucial for accurate circuit analysis.
Physicist3
Messages
103
Reaction score
0
Hi, After adding a wire across a circuit to section off part of the load in the form of a short circuit, I am still seeing a couple of milliamps flowing through the load. Is this due to the fact that the wires used to create the short circuit will have a small amount of resistance, hence preventing all the currrent flowing through the short circuit?
 
Engineering news on Phys.org
Yes.

The remaining series load will determine the current. The current will be shared by the short and the shorted part of the load in proportion to the reciprocal of their respective resistances.

In reality there is no such thing as a perfect short circuit. There will be a voltage difference across the short. That will result in a residual current through the higher resistance original load path.
 
Thread 'Weird near-field phenomenon I get in my EM simulation'
I recently made a basic simulation of wire antennas and I am not sure if the near field in my simulation is modeled correctly. One of the things that worry me is the fact that sometimes I see in my simulation "movements" in the near field that seems to be faster than the speed of wave propagation I defined (the speed of light in the simulation). Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...
Hello dear reader, a brief introduction: Some 4 years ago someone started developing health related issues, apparently due to exposure to RF & ELF related frequencies and/or fields (Magnetic). This is currently becoming known as EHS. (Electromagnetic hypersensitivity is a claimed sensitivity to electromagnetic fields, to which adverse symptoms are attributed.) She experiences a deep burning sensation throughout her entire body, leaving her in pain and exhausted after a pulse has occurred...
Back
Top