Three identical resistors, each with resistance R, are connected in parallel to a voltage source V. What is the total equivalent resistance of the circuit?

A R/3

B R

C 3R/2

D 3R

✓ Correct Answer: Option A

For resistors in parallel, the reciprocal of the equivalent resistance is the sum of the reciprocals of individual resistances: 1/R_eq = 1/R + 1/R + 1/R = 3/R. Thus, R_eq = R/3.

💡 Why is A) the correct answer?

The correct answer to the question "Three identical resistors, each with resistance R, are connected in parallel to a voltage source V. What is the total equivalent resistance of the circuit?" is Option A: R/3.

The other options — B) R, C) 3R/2, D) 3R — are incorrect for this AP Exam Prep question. As explained above: For resistors in parallel, the reciprocal of the equivalent resistance is the sum of the reciprocals of individual resistances: 1/R_eq = 1/R + 1/R + 1/R = 3/R. Thus, R_eq = R/3.

📚 About This AP Exam Prep Practice Question

This 2-level AP Exam Prep question from the AP Physics topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.

How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free AP Exam Prep practice test or use flashcards for spaced repetition review.

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Three identical resistors, each with resistance R, are connected in parallel to a voltage source V. What is the total equivalent resistance of the circuit?

✓ Correct Answer: Option A

📚 About This AP Exam Prep Practice Question

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