Series & parallel practice problems
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Read the series & parallel combinations class notes.

For the circuit shown,

• R₁ = 150 kΩ
• R₂ = 470 kΩ
• R₄ = 390 kΩ

Find the value of R₃ so that equivalent resistance of the network seen looking in at the indicated port is 238.5 kΩ.

Answer