In an AC circuit, if resistance remains constant and voltage is doubled, what happens to the current?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Prepare for the BCTC Industrial Maintenance Technology Mechatronic Assessment with tailored quizzes. Access multiple choice questions and detailed explanations. Gear up confidently for your exam!

Multiple Choice

In an AC circuit, if resistance remains constant and voltage is doubled, what happens to the current?

Explanation:
Current changes follow a direct proportion to voltage when resistance stays the same. According to Ohm's law, I = V/R, so if V is doubled and R is constant, I must double as well. For example, with a 10-ohm resistor, increasingVoltage from 10 V to 20 V changes current from 1 A to 2 A. In AC circuits, using RMS values, I_rms = V_rms / R, so doubling the voltage still doubles the current.

Current changes follow a direct proportion to voltage when resistance stays the same. According to Ohm's law, I = V/R, so if V is doubled and R is constant, I must double as well. For example, with a 10-ohm resistor, increasingVoltage from 10 V to 20 V changes current from 1 A to 2 A. In AC circuits, using RMS values, I_rms = V_rms / R, so doubling the voltage still doubles the current.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy