1 Answer | Add Yours
This can be simply explained as below.
when you have longer length of wire, the current has to travel more distance, more the distance higher the number of obstacles it faces through its path. Therefore resistance increases with the length.
When cross sectional area increases the space of the elctrons to travel increases(simply explained). Therefore less amount of obstacles for the current. Therefore when area increases the resistance decreases.
We’ve answered 319,841 questions. We can answer yours, too.Ask a question