What would be the total power consumed by...

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Question 1 of 2066636eed28f7522a1c51ddc5

What would be the total power consumed by the circuit as shown in figure "A" of the illustration if the source voltage is 12 volts, the resistance for R1 is 470 ohms, the resistance of R2 is 330 ohms, and the resistance of R3 is 800 ohms? Illustration EL-0032

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Question 1 of 20

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🔍 Key Concepts

• Identify from figure A whether the resistors are in series, parallel, or a combination (R1 with R2 vs R3) • Use total resistance of the network and the formula ( P = \frac{E^2}{R_{total}} ) to find total power from a 12-volt source • Remember that equal-value resistances in parallel have a simple equivalent resistance relationship

💭 Think About

• From the drawing, do R1 and R2 share the same current (series) before joining R3, or do they each have their own separate path between the same two nodes (parallel)? • Once you find whether R1 and R2 are in series and how that branch relates to R3, what is the combined equivalent resistance of the entire load seen by the source? • After you have (R_{total}), what is the power using either ( P = \frac{E^2}{R} ) or ( P = E \times I ) with ( I = \frac{E}{R} )?

✅ Before You Answer

• Be sure you have the correct equivalent resistance for the R1–R2 combination before combining it with R3 • Check that your final total circuit resistance is reasonable: adding a parallel path should make resistance smaller than either branch alone • Convert your final power answer from watts to milliwatts (1 W = 1000 mW) before matching the multiple-choice options

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