What term describes the opposition to current flow in a conductor?

• A. Capacitance
• B. Conductance
• C. Inductance
• D. Resistance

Answer: (D)

Resistance is the term used to describe the opposition to current flow in a conductor. In circuits, Ohm’s law links voltage, current, and resistance with V = I R, so higher resistance means less current for a given voltage. Resistance depends on material (resistivity), cross-sectional area (a larger area lowers resistance), length (a longer path raises resistance), and temperature (most conductors become more resistive as they heat up). Capacitance relates to storing charge and opposing changes in voltage, not steady current. Inductance resists changes in current due to magnetic effects. Conductance is the reciprocal of resistance, indicating how easily current can flow; it describes the ease of flow rather than the opposition itself.