John planned to make his own extension wire so he bought 15 m wire with a resistance of 20 Ω from the store. When he arrived home, he cut the wire to create  10 m and 5 m  extension wires. What will be the resistance of the 10 m wire?

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Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.