Everyday Science · 45 sec
Electrical resistance and conductance
The science behind something you encounter, use, or wonder about.
The useful idea
- The useful idea
The electrical resistance of an object is a measure of its opposition to the flow of electric current.
- How it works
Its reciprocal quantity is electrical conductance, measuring the ease with which an electric current passes.
- Why it matters
Electrical resistance shares some conceptual parallels with mechanical friction.
Why this matters
Look for Electrical resistance and conductance the next time you notice this pattern in everyday life.
Try this
Look for Electrical resistance and conductance the next time you notice this pattern in everyday life.
Test your recall
Which idea belongs to the explanation of Electrical resistance and conductance?
- The useful idea — correct
- How it works
- Why it matters
The electrical resistance of an object is a measure of its opposition to the flow of electric current.