Explaining DC Open vs Closed Circuits Simplified

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SUMMARY

The discussion clarifies the fundamental difference between DC open and closed circuits. An open circuit is defined as having a broken loop, preventing current from flowing, while a closed circuit features a complete loop that allows current to circulate. The explanation emphasizes the importance of visualizing the circuit as a loop to understand the flow of electricity effectively. The water theory analogy was deemed ineffective for this explanation.

PREREQUISITES
  • Basic understanding of electrical circuits
  • Familiarity with direct current (DC) concepts
  • Knowledge of circuit diagrams
  • Ability to visualize electrical flow
NEXT STEPS
  • Research the principles of Ohm's Law in relation to circuit functionality
  • Explore circuit simulation tools like LTspice for practical understanding
  • Learn about series and parallel circuits and their characteristics
  • Investigate the role of resistors and switches in circuit design
USEFUL FOR

This discussion is beneficial for electrical engineering students, educators explaining basic circuit concepts, and hobbyists interested in electronics and circuit design.

eric0524
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I am trying to find a extremely simple answer to explain the difference between a DC open circuit and a closed circuit. I tried to explain it with the water theory but that didn't work so well.
 
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Thank you for the reply this thread is now complete. (not sure why none of the posts showed up but it's solved)
 
eric0524 said:
I am trying to find a extremely simple answer to explain the difference between a DC open circuit and a closed circuit. I tried to explain it with the water theory but that didn't work so well.

Basically think about if there's a full circuit "loop" for current to flow. An open circuit has an open or broken loop. An closed circuit has a closed or complete loop.

http://www.w3.org/2000/08/nba-manual/circuit.gif

Left is open. Right is closed.
 

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