As shown in figure "A" of the illustration...

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Question 1 of 205eccefa3bacbc34ba4d47ef9

As shown in figure "A" of the illustration if the applied voltage is 12 VDC, the resistance of R1 is 10 ohms, and R2 is 10 ohms what is the total power consumed by the circuit when the switch is closed? See illustration EL-0020.

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🔍 Key Concepts

• Series circuit behavior when the switch is closed in figure A • How to find total resistance (RT) when R1 and R2 are both 10 ohms in series • Using the power formulas: (P = V \times I), (P = I^2 \times R), and (P = \frac{V^2}{R})

💭 Think About

• When the switch in figure A is closed, how does the current flow through R1 and R2? Are they in series or parallel? • Once you know the total resistance, what is the circuit current using Ohm’s Law ((I = V / R_T)) with 12 V and your total resistance? • After finding the current, which power formula is easiest to use to find the total power used by both resistors together?

✅ Before You Answer

• Be sure you treat R1 and R2 as series resistors and add their resistances correctly • Double‑check that you use total circuit resistance in your current calculation, not just one resistor • After computing power, compare your numerical result with the answer choices and check that the units are watts and the magnitude is reasonable for a 12‑volt, 20‑ohm load

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