Question

stor of length and uniform area of cross-section 'A'
R Another conductor of length 2-5 l and resistance 0.5 R
5.
A cylindrical conductor of length 2
has resistance 'R'. Another conducto
of the same material has area of cross-section
(A)
5 A
sel​

Answer 1

Answer:

Explanation:

The area of another conductor is 2A .

Given:

Length

Area of cross section

Resistance

Length of another conductor

Resistance of another conductor

To find:

Area of cross section of another conductor

Solution:

The formula of resistivity is given below:

Case 1:

Case 2:

Since, both the cases are of same material, we can equate the resistivity,

Thus,

On solving, we get,

.