A technician tests an electrical circuit where total current splits between two parallel resistors in inverse proportion to their resistances and . What is the current flowing through ?
Answer and explanation
Correct answer: D.
- Step 1: In parallel, current is inversely proportional to resistance: . Total ratio parts: . Each part is . The current through is . **Answer: . Why not the others:** is the current through the larger resistor , is an incorrect ratio, and is an arithmetic error.
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