Which of the following circuit of elements is used to block DC in an electronic circuit?

Answer: Option B

Definition: In electronic circuits, certain components are used to control the flow of direct current (DC) and alternating current (AC). A capacitor plays a crucial role in blocking DC while allowing AC to pass.

Step 1: Understanding the behavior of circuit elements:

Resistance: It opposes both DC and AC but does not block DC completely.

Capacitance: A capacitor blocks DC because, at steady-state, the dielectric between its plates prevents continuous DC flow. However, it allows AC to pass by charging and discharging cyclically.

Inductance: An inductor primarily opposes changes in current but does not block DC.

Diode: It allows current to flow in one direction and blocks reverse current, but it does not specifically block DC.

Step 2: Since a capacitor effectively blocks DC while allowing AC to pass, the correct answer is Capacitance (Option B).