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An electronics hobbyist is building a radio which requires 150 Ω in her circuit, but she has only 220 Ω, 79 Ω and 92 Ω resistors available.

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An electronics hobbyist is building a radio which requires 150 Ω in her circuit, but she has only 220 Ω, 79 Ω and 92 Ω resistors available. How can she connect the available resistors to get desired value of resistance?

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Required effective resistance = 150 Ω Given resistors of resistance, R1 = 220 Ω, R2 = 79 Ω, R3 = 92 Ω

Parallel combination R1 and R2

Parallel combination of 220 Ω and 79 Ω in series with 92 Ω.

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