Resistance

Definition

Resistance is a measure of how much an object or material opposes the flow of electric current. It determines how difficult it is for electrons to move through a circuit.

Related terms

Conductivity: The ability of a material to allow the flow of electric current.

Ohm's Law:

A mathematical equation that relates voltage, current, and resistance in a circuit.

Resistor:

An electronic component specifically designed to introduce resistance into a circuit.