Series Circuit Physics Example 2

Follow the full solution, then compare it with the other examples linked below.

Example 2

medium
Two resistors in series have a total resistance of 15ย ฮฉ15 \text{ } \Omega. If one is 7ย ฮฉ7 \text{ } \Omega, what is the other?

Solution

  1. 1
    In series: RT=R1+R2R_T = R_1 + R_2.
  2. 2
    R2=RTโˆ’R1=15โˆ’7=8ย ฮฉR_2 = R_T - R_1 = 15 - 7 = 8 \text{ } \Omega

Answer

R2=8ย ฮฉR_2 = 8 \text{ } \Omega
Series resistances add linearly. The total is always greater than any individual resistance in the circuit.

About Series Circuit

A circuit arrangement in which components are connected end-to-end along a single path, so exactly the same current flows through every component.

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