Electricity: Positive to Negative or Negative to Positive?

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SUMMARY

The discussion clarifies the flow of electricity in a circuit involving a battery. Current in metallic conductors flows from the negative terminal to the positive terminal due to the movement of negatively charged electrons. When a spark occurs, the electric current through air consists primarily of positively charged ions moving from the positive terminal to the negative terminal, influenced by the voltage gradient between the battery terminals.

PREREQUISITES
  • Understanding of basic electrical concepts, including current and voltage.
  • Familiarity with the structure of a battery and its terminals.
  • Knowledge of electron flow and charge carriers in conductors.
  • Awareness of ionization and its role in electric discharge through air.
NEXT STEPS
  • Research the principles of electric current in metallic conductors.
  • Study the behavior of ions in electric fields and their role in sparking.
  • Explore the concept of voltage gradients and their effects on charge movement.
  • Learn about the differences between conventional current flow and electron flow.
USEFUL FOR

Students of physics, electrical engineers, and anyone interested in understanding the fundamentals of electricity and electric discharge phenomena.

brewcrew975
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Lets say you have a battery and connect wires to each of the terminals. Now you bring both of the wires together to create a spark. Is the spark jumping from positive to negative (current) or from negative to positive (electron flow). Thanks!
 
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brewcrew975 said:
Lets say you have a battery and connect wires to each of the terminals. Now you bring both of the wires together to create a spark. Is the spark jumping from positive to negative (current) or from negative to positive (electron flow). Thanks!

Hi, :smile:

Actually, the current flow in metallic conductors is due to free electrons which flow from negative to positive terminal (as electrons are negatively charged particles).

However, spark is electric current thru air, the main constituant of which are positively charged ions which flow from positive to negative terminal under the influence of a potential gradient in air due to the voltage between the battery terminals.
 

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