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Electrical Engineering QUESTION #2135
Question 1
In a purely inductive circuit, if the frequency of the AC supply is doubled, what happens to the current $I$ flowing through the circuit?
  • It is doubled
  • It is halved✔️
  • It remains the same
  • It becomes four times
Correct Answer Explanation
Inductive reactance $X_L = 2\pi fL$ is directly proportional to frequency $f$. Doubling $f$ doubles $X_L$, which halves the current $I = V/X_L$.