Chapter 23, Problem 58PCE

(a)

To determine

The characteristic time of solenoid in terms of wire diameter $d$, the number of turns $N$ and solenoid diameter $D$ and resistivity of the copper $\rho$.

(b)

To determine

The resistivity of the wire increases, decreases or remain same if number of turns $N$ of wire increases.

(c)

To determine

The characteristic time of circuit.