Relation between Resistance and Length

Q1

What is resistance?

Resistance is the measure of opposition to current flow in a circuit. Its SI unit is ohm.

Q2

What is resistivity?

Resistivity is the resistance generated by the substance per unit distance for a unit cross-section. Its SI unit is ohm-m.

Q3

What is electric current?

Electric current is the rate of flow of electrons inside a conductor. Its SI unit is ampere.

Q4

What happens to the resistance of a wire if its length is decreased?

As resistance is directly proportional to the length of the conductor, the resistance will decrease with the decrease in the length of the wire.