What is the current flowing through R3 in...

Question 1 of 2921866636eed28f7522a1c51d46b

What is the current flowing through R3 in figure "B" of the illustrated circuit when the switch is closed if the battery voltage is 12 VDC and resistance of R1 is 2 ohms, R2 is 3 ohms, and R3 is 6 ohms, respectively? Illustration EL-0019

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Question 1 of 29218

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🔍 Key Concepts

• Parallel circuits and how voltage is the same across all branches • Using Ohm’s Law $I = \frac{E}{R}$ to find branch current • Distinguishing between total circuit current and current in one resistor

💭 Think About

• Look at figure B and decide: are R1, R2, and R3 in series or in parallel once the switch is closed? What does that tell you about the voltage across each resistor? • If each branch has the same supply voltage, how do you find the current in just ONE resistor when you know its resistance value? • Which resistor’s value (2 Ω, 3 Ω, or 6 Ω) matches the branch the question is asking about, and what current does Ohm’s Law give for that branch?

✅ Before You Answer

• Be sure you are calculating branch current, not total circuit current • Confirm that you are using 12 V directly across the resistor in question (true for parallel branches) • Double‑check that you use the correct resistance value (2 Ω, 3 Ω, or 6 Ω) for the resistor the question is asking about before applying Ohm’s Law