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a) In the circuits in Fig. P3.7(a)(d), find the equivalent

Chapter 3, Problem 3.7

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QUESTION:

a) In the circuits in Fig. P3.7(a)–(d), find the equivalent resistance seen by the source.

b) For each circuit find the power delivered by the source.

Questions & Answers

QUESTION:

a) In the circuits in Fig. P3.7(a)–(d), find the equivalent resistance seen by the source.

b) For each circuit find the power delivered by the source.

ANSWER:

Step 1 of 9

Part (a)

Consider the circuit (a),

                             

The equivalent resistance of the circuit can be calculated as,

\(\begin{array}{l} R_{e q}=[(15 \| 60)+(30 \| 45)+20] \| 50+25+10 \\ R_{e q}=\left[\frac{15 \times 60}{15+60}+\frac{30 \times 45}{30+45}+20\right] \| 50+35 \\ R_{e q}=[12+18+20] \| 50+35 \\ R_{e q}=50 \| 50+35 \end{array}

 

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