The resistance of a conductor is related to which three factors of the conductor. For the same material, the longer the conductor is and the smaller the cross-sectional area is, the greater the resistance of the conductor is?

The resistance of a conductor is related to which three factors of the conductor. For the same material, the longer the conductor is and the smaller the cross-sectional area is, the greater the resistance of the conductor is?

Cross sectional area of material resistance and resistance length

What factors are related to the resistance of metal?
Help

As small as pencil lead is not made of lead, your answer in high school is not related to conductor material, length and cross-sectional area r = L / s * ρ
It is also related to temperature, some of which increase with the increase of temperature. If the filament is right, but it is uncertain, do not mislead beginners

What's the function of copper coil resistance? Does the coil winding affect the resistance

In fact, you should be involved in the electromagnetic force related issues. The size of the electromagnetic force is related to the coil. If the coil is not wound well, it will also be affected. Although the resistance does not change, it changes the distribution of the magnetic field, so it will affect the electromagnetic force!
Hope to be useful to you!

The resistance of 0.2 Ω enameled wire coil 3V power on for one minute to generate heat will make the coil increase by how many degrees? Coil initial temperature 15 ℃ ~ 20 ℃, seek electricity God, the best process!

P = u * U / r = 9 / 0.2 = 45, but the heat dissipation of enameled wire is better, and it will not produce less temperature rise