Electrician Red Seal · Question
Three 150 Ω resistors are connected in parallel across a 120V source. What is the total current drawn from the source?
Each parallel branch will draw current according to Ohm's Law: I = V/R = 120V / 150Ω = 0.8A. Since there are three identical parallel branches, the total curren
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Question: Three 150 Ω resistors are connected in parallel across a 120V source. What is the total current drawn from the source?
Answer options:
- 0.8 A
- 1.2 A ✅ 2.4 A
- 0.267 A
Correct answer: 2.4 A
Explanation: Each parallel branch will draw current according to Ohm's Law: I = V/R = 120V / 150Ω = 0.8A. Since there are three identical parallel branches, the total current is 3 * 0.8A = 2.4A. Alternatively, the total resistance is 150Ω/3 = 50Ω, and total current is 120V/50Ω = 2.4A.
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