The unit of resistance is
The unit of resistance is the ohm (symbol: Ω). Resistance is a measure of how much a material or device opposes the flow of electric current. It quantifies the degree to which a conductor resists the passage of electrons. The ohm is a fundamental unit in electrical engineering and physics, crucial for understanding and designing circuits and electrical systems.
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The correct answer is Ohm (Ω) (option D). Resistance, a fundamental property in electricity, is measured in ohms (Ω). This unit is named after the German physicist Georg Simon Ohm, who extensively studied electrical circuits and formulated Ohm’s law. Resistance represents how much a material or device impedes the flow of electric current. It is essential in designing circuits to control current flow and manage power dissipation. The ohm is universally recognized as the unit for resistance in the International System of Units (SI), providing a standardized measure across scientific and engineering disciplines. Understanding resistance is fundamental for optimizing the performance of electronic components, designing efficient electrical networks, and ensuring the safe operation of electrical devices by controlling current levels appropriately.