Which one of the following physical quantities does NOT affect the resistance of a cylindrical resis...........

General Science (NDA) Physics

Which one of the following physical quantities does NOT affect the resistance of a cylindrical resistor?

The current through it

Its length

The resistivity of the material used in the resistor

The area of cross-section of the cylinder

The longer the cylinder, the higher the resistance.

Additionally, the resistance is inversely proportional to the cross sectional area A.

If the diameter of the cylinder is doubled, the cross-sectional area increases by a factor of 4. Therefore, resistance decreases by a factor of 4.

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