everyday science MCQ #50155

If voltage across a resistor is fixed and resistance is tripled, what happens to current?

everyday science MCQ #50155

  1. Question 1

    Q1. If voltage across a resistor is fixed and resistance is tripled, what happens to current?

    • A) It triples
    • B) It stays the same
    • C) It becomes one third as large
    • D) It becomes nine times larger

    Answer: It becomes one third as large

    Explanation: Ohm's Law states I = V/R; if voltage is fixed and resistance is tripled (3R), the current becomes I' = V/(3R) = one third of the original current. Resistance and current are inversely proportional when voltage is held constant.