Question

What are the materials d o you collect to prove that the resistance of a

conductor is inversely proportional to its area of cross section. Explain the

experimental procedure ? ​

Answer 1

Answer:

The factors which affects the Resistance of a wire are its Length and Thickness. Experiments Show that;

.The Resistance R of a wire of uniform cross-sectional area A is directly proportional to its Length; i.e

                                                      R\alpha L

.The Resistance R of a uniform wire is inversely proportional to it's cross-sectional area A i.e

                                                    R \alpha  1

                                                                   A

By combining the above results, we get;

                                                  R \alpha L

                                                                A

.Furthermore, if we define a constant P as the resistivity of the material that the wire is made of, we get;

                                                R = PL

                                                       A

Hope this Helps!

Explanation: