engineering physics MCQ #53

The voltage across a resistor in an AC circuit is 100 V. The current is

engineering physics MCQ #53

  1. Question 1

    Q1. The voltage across a resistor in an AC circuit is 100 V. The current is

    • A) 100/R A
    • B) 100√2/R A
    • C) 100/R√2 A
    • D) R/100 A

    Answer: 100/R√2 A

    Explanation: Irms = Vrms/R = 100/R, and since Vrms = V0/√2, I0 = V0/R, so Irms = I0/√2 = 100/(R√2).