Section D: Give a long answer to the question given below.
36b. (i). When is the potential difference between two points said to be \(1\ volt\)?
(ii). A copper wire has a diameter of \(0.2\ mm\) and resistivity of \(1.6 \times 10^{-8}\ \Omega m\). What will be the length of this wire to make its resistance \(14\ \Omega\)? How much does the resistance change, if the diameter of the wire is doubled?
(ii). A copper wire has a diameter of \(0.2\ mm\) and resistivity of \(1.6 \times 10^{-8}\ \Omega m\). What will be the length of this wire to make its resistance \(14\ \Omega\)? How much does the resistance change, if the diameter of the wire is doubled?
i. One volt is the potential difference between two points in an electric circuit when of work is done to move charge of from one point to other.
ii. The length of the wire is and the new resistance is .