Question

On which of the given resistance does not depend : A. Length of conductor B. Area of cross-section C. Temperature D. Density

Answer 1

Answer:

resistance does not depend on the density of a conductor . it only depends on three factors which is given above

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Answer 2

(D) Density.

Resistance: The property of opposing the flow of current is termed as resistance.

Dependence of Resistance:

• Length of conductor: The resistance of any body is directly proportional to the length of the conductor.
• Area of cross-section: The resistance of any body is inversely proportional to the area of cross-section of the conductor.
• Temperature- Resistance of a body increase with the increase in temperature which further slows down the flow of electrons.

 Formula used for calculating resistance:

                                          R = $(\frac{pL}{A} )$

                                where, R = resistance

                                             p = resistivity

                                            L = length of conductor

                                             A = area of cross-section.

Resistance does not depend on the density of the conductor but depends on the density of free electrons.