Electrical Exam Term
Ohm
The standard unit of electrical resistance, symbolized by the Greek letter omega (Ω).
Detailed Explanation
Named after Georg Simon Ohm, one ohm is the resistance that produces one ampere of current when one volt is applied. Ohm's Law (V = I × R) is the foundation of electrical calculations, relating voltage, current, and resistance. Understanding resistance is essential for wire sizing, voltage drop calculations, and troubleshooting circuits.
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