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CIE A Level Physics复习笔记10.1.7 Resistors in Series

Category: A-level课程, 教材笔记, 福利干货 Date: 2022年8月16日 下午4:40

Deriving the Equation for Resistors in Series

  • In a series circuit, the combined resistance of two or more resistors is the sum of the individual resistances
  • In a series circuit:
    • The current is the same through all resistors
    • The potential difference is split between all the resistors
  • The equation for combined resistors in series is derived using Kirchhoff’s laws:

Derivation for resistors in series, downloadable AS & A Level Physics revision notes

Resistors in Series

  • When two or more components are connected in series:
    • The combined resistance of the components is equal to the sum of individual resistances

Resistors in series diagram, downloadable AS & A Level Physics revision notes

Resistors connected in series

Resistors in series equation, downloadable AS & A Level Physics revision notes

Combined resistance of two or more resistors in series equation

Worked Example

The combined resistance?R?in the following series circuit is 60 Ω.What is the resistance value of R2?

A.? ? ?100 Ω? ? ? ? ? ? ? ?B.? ? ?30 Ω? ? ? ? ? ? ? ?C.? ? ?20 Ω? ? ? ? ? ? ? ?D.? ? ?40 Ω

WE - Resistors in series answer image, downloadable AS & A Level Physics revision notes

 

 

 

 

 

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