Choose the incorrect statements from the options given below: (A) SI unit of inductive reactance and capacitive reactance is Ohm Choose the correct answer from the options given below: |
(A) and (B) only (A) and (C) only (B) and (C) only (B) and (D) only |
(B) and (C) only |
The correct answer is Option (3) → (B) and (C) only (A) SI unit of $X_L$ and $X_C$ is Ohm → Correct. (B) Inductive reactance $X_L = \omega L$; for DC ($\omega = 0$), $X_L = 0$, so it does not stop DC, only opposes AC → Incorrect. (C) $X_L \propto f$, but $X_C = \frac{1}{\omega C} \propto \frac{1}{f}$ → Not both proportional to $f$ → Incorrect. (D) In pure capacitor, current leads voltage by $90^\circ$, average power consumed = 0 → Correct. Incorrect statements: (B), (C) |