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A hobbyist building a radio needs a 150-? resistor in her
Chapter 21, Problem 42P(choose chapter or problem)
Problem 42P
A hobbyist building a radio needs a 150-Ω resistor in her circuit, but has only a 220-Ω, a 79-Ω, and a 92-Ω resistor available. How can she connect these resistors to produce the desired resistance?
Questions & Answers
QUESTION:
Problem 42P
A hobbyist building a radio needs a 150-Ω resistor in her circuit, but has only a 220-Ω, a 79-Ω, and a 92-Ω resistor available. How can she connect these resistors to produce the desired resistance?
ANSWER:
Step 1 of 3
Here we need to connect the given resistors , and in order to produce a equivalent resistance of .
In order to have a equivalent resistance of , the first two resistors must be parallel to each other and they must be connected in series with third resistor as shown in the figure below.