Which electrical quantity is measured in ohms?

Which electrical quantity is measured in ohms?

• A. Voltage
• B. Current
• C. Resistance
• D. Capacitance

Answer: (C)

Resistance is the electrical quantity measured in ohms. It quantifies how much a component opposes the flow of electric current. The ohm is defined as one volt per ampere, so resistance relates voltage and current through Ohm's law: V = I R. This means that with a given voltage, increasing resistance reduces current, while decreasing resistance increases current. The amount of resistance depends on material (resistivity), length, and cross-sectional area, and it can change with temperature. Devices designed to limit or control current, like resistors, are specified in ohms. Voltage is measured in volts, current in amperes, and capacitance in farads, so those quantities are not measured in ohms.

Resistance is the electrical quantity measured in ohms. It quantifies how much a component opposes the flow of electric current. The ohm is defined as one volt per ampere, so resistance relates voltage and current through Ohm's law: V = I R. This means that with a given voltage, increasing resistance reduces current, while decreasing resistance increases current. The amount of resistance depends on material (resistivity), length, and cross-sectional area, and it can change with temperature. Devices designed to limit or control current, like resistors, are specified in ohms. Voltage is measured in volts, current in amperes, and capacitance in farads, so those quantities are not measured in ohms.