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Factors Affecting Resistance in Electrical Circuits

Electricity and circuits • Current, voltage, and resistance

Key concepts

What you'll likely be quizzed about

  • Different materials conduct electricity with varying efficiency.
  • Metals, such as copper and aluminum, have low resistance and are excellent conductors.
  • In contrast, insulators like rubber and glass have high resistance, obstructing current flow.
  • The atomic structure of each material influences its ability to conduct electricity, as free-moving electrons in conductors enhance current transmission.

Flashcards

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How does the length of a conductor affect resistance?

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Longer conductors have higher resistance due to increased collisions between electrons and atoms.

Key notes

Important points to keep in mind

Use materials with low resistance for efficient circuits.

Keep conductor length short to minimize resistance.

Increase cross-sectional area to reduce resistance.

Monitor temperature effects on resistance in circuits.

Select appropriate insulators to ensure safety.

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