AP Physics 1 Question 44: Answer and Explanation

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Question: 44

4. Which configuration of battery and resistors will create a circuit with the greatest current?

  • A. A high voltage battery with resistors arranged in series
  • B. A high voltage battery with resistors arranged in parallel
  • C. A low voltage battery with resistors arranged in series
  • D. A low voltage battery with resistors arranged in parallel

Correct Answer: B

Explanation:

B According to Ohm's Law, current is directly proportional to voltage (for any given resistance). Therefore, we want a high voltage battery, eliminating (C) and (D). Ohm's Law also tells us that current is inversely proportional to resistance (for any given voltage), so we want the lowest possible voltage. Since arranging resistors in parallel lowers the total resistance, (B) is correct.