What unit is resistance measured in?

Resistance is measured in ohms, which are represented by the Greek letter omega (Ω). This unit quantifies how much a material opposes the flow of electric current. When an electric current flows through a conductor, the resistance determines how much current will flow for a given voltage according to Ohm's law, which states that V (voltage) = I (current) x R (resistance). Therefore, knowing that resistance is measured in ohms helps in understanding and solving various electrical problems involving circuits. The other units refer to different electrical concepts: volts measure electric potential, amperes measure current flow, and coulombs measure electrical charge.