Relationship between charge carriers per unit volume and resistance

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SUMMARY

The relationship between charge carriers per unit volume and resistance is inversely proportional, meaning that an increase in charge carriers leads to a decrease in resistance. More charge carriers facilitate the flow of current, resulting in lower resistance due to reduced collisions among free electrons. Additionally, lower resistance correlates with higher drift velocity, allowing charged particles to move more swiftly through a conductor. This fundamental principle is crucial for understanding electrical circuits and current flow.

PREREQUISITES
  • Understanding of basic electrical concepts, including current and voltage.
  • Familiarity with Ohm's Law and its application in circuits.
  • Knowledge of drift velocity and its significance in charge transport.
  • Concept of charge carriers in conductive materials.
NEXT STEPS
  • Research the mathematical relationship between charge carrier density and resistance in conductors.
  • Explore the concept of drift velocity in more detail, including its calculation and implications.
  • Study the effects of temperature on resistance and charge carrier mobility.
  • Learn about different materials and their conductivity properties, focusing on semiconductors and superconductors.
USEFUL FOR

Students and professionals in electrical engineering, physics enthusiasts, and anyone seeking to deepen their understanding of electrical conductivity and circuit behavior.

tobytoby123
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Why is the number of charge carriers per unit volume is inversely proportional to resistance?If there is more charges carrier, it doesn't increase the collision between free electron which causes in increase of resistance?sorry for my unclear concept of Electricity circuit.I hope there will be someone to help.:smile:
 
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Are you confident about what is meant by 'inversely proportional'?
More charge carriers will reduce resistance... do you see it?
 
when the number of charge carrier per unit volume increase, the resistance decrease.Is that means inversely proportional?I don't understand why more charge carrier will reduce resistance @@ because it helps transferring charge?sorry i am really confused.
 
Also, is the lower the resistance, the higher the Drift Velocity?this also makes me confused.
 
Low resistance means that a high current can flow.
Current is the amount of charge (charge carriers) flowing per second so basically more charge carriers means more current which means LOW resistance.
This is a very much simplified explanation... hope it helps
 
thx very much:)it helps a lot:)but if higher the drift velocity, is that mean low resistance?because if low resistance, the charged particles can pass through faster.
 

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