Resistance is a measure of the opposition to current flow in an electrical circuit. It is a force that counteracts the flow of current, and the greater the resistance, the lower the current. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω) . It is a numerical quantity that can be measured and expressed mathematically. Resistance values can be calculated using Ohms Law, which states that resistance equals voltage divided by current. Resistance depends on the type of material, cross-sectional area, and temperature.
In summary, resistance is a property of an electrical circuit that hinders the flow of current and is measured in ohms. It can be calculated using Ohms Law and depends on the type of material, cross-sectional area, and temperature.