Physics · Reactance and impedance, LCR series circuit, resonance, power in AC circuits, wattless current
Assertion A capacitor blocks direct current in the steady state. Reason The capa
Assertion A capacitor blocks direct current in the steady state. Reason The capacitive reactance of the capacitor is inversely proportional to frequency f of the source of e.m.f...
- A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
- B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
- C. Assertion is correct but Reason is incorrect
- D. Both Assertion and Reason are incorrect
Step-by-step solution
Assertion: In DC steady state, a capacitor is fully charged and no current flows, so it blocks DC. Reason: Capacitive reactance X_C = 1/(2πfC), inversely proportional to frequency f. For DC, f=0, so X_C → ∞, which explains why DC is blocked. Both statements are correct and the reason correctly explains the assertion.
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