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

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Enhance your skills for the BCTC Industrial Maintenance Technology AMTEC – NOCTI Mechatronic Assessment. Use flashcards and multiple choice questions with detailed explanations. Prepare confidently for your test!

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.

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