Question

If the radius of a wire is doubled, what will be the affect on
(1) R (2) I

Answer 1

Answer:

R will be one fourth of the original value

and I will be four time the original value

Explanation:

we know R is inversely proportional  to the Area of the conductor

Hence on doubling the radius , The Resistance will become one fourth of the original value

I is inversely directly proportional to Resistance so it becomes 4 times                      

Answer 2

Explanation:

Here is your answer...........