Electric Resistance Converter
Convert between 6 units of electrical resistance — ohms, milliohms, microohms, kilohms, megohms, and gigaohms.
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About the Electric Resistance Converter
Electrical resistance describes how strongly a material opposes the flow of electric current, measured in ohms (Ω). Ohm's Law states V = IR — voltage equals current times resistance. Resistors in electronic circuits range from fractions of an ohm (power resistors) to gigaohms (insulation testing). The inverse of resistance is conductance, measured in siemens. Resistance increases with temperature in metals but decreases in semiconductors.
Quick facts
- ›Copper wire resistance: about 0.017 Ω per metre for 1 mm² cross-section
- ›The human body's resistance ranges from 1,000 Ω (wet skin) to 100,000 Ω (dry skin)
- ›Superconducting materials have exactly zero resistance below a critical temperature
- ›The ohm is named after Georg Simon Ohm who published his resistance law in 1827
Common uses: Electronics, power engineering, telecommunications, PCB design, electrical safety testing