In figure of "A" of the illustrated circuit,...

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Question 1 of 205eccefa3bacbc34ba4d47efd

In figure of "A" of the illustrated circuit, what is the voltage measured across R1 if the battery voltage is 24 volts, the resistance of R1 is 34 ohms, and the resistance of R2 is 126 ohms when the switch is closed? See illustration EL-0020.

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🔍 Key Concepts

• Series circuit behavior when the switch is closed • Using Ohm’s Law (V = I × R) to find voltage across one resistor • How voltage divides across resistors in series (voltage divider)

💭 Think About

• Look at Figure A and decide whether R1 and R2 are in series or parallel once the switch is closed. • If you know the total resistance of the circuit, how can you find the circuit current from the 24‑volt source? • Once you know the current, how do you use the resistance of R1 to find the voltage drop across it?

✅ Before You Answer

• Confirm that both R1 and R2 are carrying the same current when the switch is closed (a sign of series connection). • Compute the total resistance (R1 + R2 or another relation, depending on how you decided they’re connected). • Verify that the voltage drops across R1 and R2 add up to about 24 volts to check your math.

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