What is Resistance?
Resistance is a fundamental electrical property that describes how much a material or component resists the flow of electric current. Measured in ohms (Ω), resistance plays a crucial role in controlling current levels, protecting devices, and ensuring system safety in both residential and commercial electrical setups.
In practical terms, electricians must account for resistance when designing or troubleshooting circuits. For instance, a longer wire or one made from a material like copper or aluminum will have varying resistance levels, which affect voltage drop and energy efficiency. Faulty wiring, corroded connections, or undersized conductors can increase resistance, leading to overheating and potential fire hazards.
Electricians use tools like multimeters to measure resistance and ensure that circuits comply with safety standards. Managing resistance correctly ensures optimal performance and longevity of appliances, lighting systems, and electrical panels.
