Resistance and Ohms

Resistance is opposition to current, is measured in Ohms (ΩΩ), and defined by Ohm's Law as voltage over current, or R=V/IR = V/I. The inverse of resistance is conductance.

Resistors are materials that resist the flow of electricity, and thus have a high resistance (and thus a low conductance) value, hence the term "resistor" for the electrical component which reduce current.

History

The term "ohm" is named after Georg Simon Ohm, who first derived the relationships between current, voltage, and resistance now known as Ohm's Law.

Deeper Knowledge on Resistance and Ohms

Conductance and Siemens

The ability to conduct to current, measured in siemens

Ohm's Law

A formula for determining voltage, current, and resistance

Resistors (Electrical Component)

Electrical components that resist the flow of electricity

Broader Topics Related to Resistance and Ohms

Conductance and Siemens

The ability to conduct to current, measured in siemens

Current and Amperes

The flow of electricity, measured in amps

Electricity

Energy that results from charged particles

International System of Units (SI)

Formal terms and definitions of the metric system

Voltage and Volts

Electrical potential energy, measured in volts

Resistance and Ohms Knowledge Graph