When two equal electric current flow opposite to each other in a wire

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Discussion Overview

The discussion revolves around a circuit involving two batteries and a variable resistor, focusing on the behavior of electric currents in different parts of the circuit. Participants explore the implications of connecting an ammeter at various points and the interactions between currents flowing in opposite directions.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • One participant describes a circuit with a 10 V battery and a variable resistor, questioning the current reading when an ammeter is connected at different points.
  • Another participant suggests that connecting an ammeter before or after a voltage source does not affect the current reading, as current cannot vanish.
  • Some participants reference the Wheatstone bridge as a relevant concept for understanding the circuit behavior.
  • There is confusion regarding the definition of a short circuit and the role of resistance in the circuit, with one participant asserting that resistance exists due to the variable resistor.
  • Participants discuss Kirchhoff's laws as a method to analyze the circuit, with varying interpretations of how to apply them to the given scenario.
  • One participant expresses uncertainty about whether two equal currents flowing in opposite directions cancel each other out, seeking clarification on this point.
  • Another participant emphasizes that the net current in a wire is a single value, suggesting that the sum of two opposing currents can be zero.
  • There are multiple interpretations of the current flow and the implications of the circuit configuration, leading to differing conclusions about the behavior of the currents.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the behavior of the currents or the implications of the circuit configuration. There are competing views regarding the application of Kirchhoff's laws and the interpretation of current flow in the circuit.

Contextual Notes

Participants note the need for additional data, such as the value of the resistor and the voltage of the other battery, to fully analyze the situation. The discussion reveals a lack of clarity in the circuit's configuration and the assumptions made about the currents.

  • #31
Thank you very much for the discussion...
:)
 

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