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Resistance
Resistance is a core engineering term. Definition, usage notes, and a practical example.
Definition
Resistance is opposition to electrical current.
Why it matters
It matters for heating, voltage drop, and sensor circuits.
How it is used
In a design check, first define the relevant load, dimension, material, or flow condition. Then interpret this term by its role in the formula and compare it with limits.
Resistance = Voltage / Current
Example
A long cable with higher resistance can create larger voltage drop.
Related calculators and resources
Formulas
Resistance = Voltage / Current