Target Exam

CUET

Subject

Physics

Chapter

Alternating Current

Question:

Identify the correct statement(s) among the following:

(A) An electric bulb connected with a capacitor in series with electric DC source, glows with-full brightness.
(B) An electric bulb connected with capacitor in series with an AC source, does not glow.
(C) An electric bulb connected with capacitor in series with a electric DC source, does not glow.
(D) An electric bulb connected with capacitor in series with an AC source, glows well.

Choose the correct answer from the options given below:

Options:

(A) only

(A) and (B)

(B) and (C)

(C) and (D) only

Correct Answer:

(C) and (D) only

Explanation:

The correct answer is Option (4) → (C) and (D)

(A) Incorrect — In a DC circuit, once the capacitor is fully charged, it blocks current. So the electric bulb does not glow continuously.

(B) Incorrect — In an AC circuit, a capacitor offers capacitive reactance (not infinite resistance), so current can flow and the bulb can glow.

(C) Correct — In a DC circuit, the capacitor eventually blocks current, so the bulb does not glow after a momentary flash.

(D) Correct — In an AC circuit, current alternates, and the capacitor allows current to pass via capacitive reactance. The bulb glows depending on current amplitude.