What is the unit of electrical resistance called?

What is the unit of electrical resistance called?

• A. Watt
• B. Volt
• C. Ohm
• D. Joule

Answer: (C)

The unit of electrical resistance is called the ohm. This measurement describes how much a conductor resists the flow of electric current. The resistance is determined by the physical properties of the material (such as its length, cross-sectional area, and type of material) and is key to Ohm's Law, which relates voltage, current, and resistance in an electrical circuit. The other options represent different electrical concepts: the watt measures power, which is the rate at which electrical energy is transferred or converted; the volt measures electrical potential or voltage, which signifies the potential difference that drives current flow; and the joule measures energy, which is the work done when a current is applied over a period of time. Understanding the specific definitions and applications of these units is essential in grasping electrical concepts and their interactions within circuits.

The unit of electrical resistance is called the ohm. This measurement describes how much a conductor resists the flow of electric current. The resistance is determined by the physical properties of the material (such as its length, cross-sectional area, and type of material) and is key to Ohm's Law, which relates voltage, current, and resistance in an electrical circuit.

The other options represent different electrical concepts: the watt measures power, which is the rate at which electrical energy is transferred or converted; the volt measures electrical potential or voltage, which signifies the potential difference that drives current flow; and the joule measures energy, which is the work done when a current is applied over a period of time. Understanding the specific definitions and applications of these units is essential in grasping electrical concepts and their interactions within circuits.