Question

You are given two wires A and B. Which will have more resistance if
(a) wire A is longer than B :
(b) wire A is thicker than B :​

Answer 1

Explanation:

A has more resistance

Because resistance is directly proportional to length of the resistor (here wire)

So as the length increase resistance also increases

In second case, A has less resistance because when thickness increases the cross section area increases.

Resistance is inversely proportional to the cross section area

Answer 2

Answer:

(a) Wire A has greater resistance

Explanation:

(b) Wire B has greater resistance because a thin wire has fewer electrons to carry the current