What term describes the opposition to the flow of electric current, is measured in ohms, and is represented by the symbol R?

What term describes the opposition to the flow of electric current, is measured in ohms, and is represented by the symbol R?

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

Answer: (C)

Opposition to the flow of electric current is resistance. It quantifies how much a component or material resists current, and its value is expressed in ohms, with the symbol R. This relationship is captured by Ohm’s law, V = IR, which shows that resistance is the ratio of voltage to current. So for a given voltage, higher resistance means less current, and vice versa. Capacitance is the ability to store energy in an electric field and is measured in farads. Inductance stores energy in a magnetic field and is measured in henries. Conductance is the reciprocal of resistance and is measured in siemens, symbolized as G.

Opposition to the flow of electric current is resistance. It quantifies how much a component or material resists current, and its value is expressed in ohms, with the symbol R. This relationship is captured by Ohm’s law, V = IR, which shows that resistance is the ratio of voltage to current. So for a given voltage, higher resistance means less current, and vice versa.

Capacitance is the ability to store energy in an electric field and is measured in farads. Inductance stores energy in a magnetic field and is measured in henries. Conductance is the reciprocal of resistance and is measured in siemens, symbolized as G.