Chapter 28, Problem 82E

(a)

To determine

The expression for $I_0$ in terms of $b$, $\delta$ and $a$ and evaluate the expression to get the numerical value of $I_0$.

(b)

To determine

The expression for the magnetic field $\overrightarrow{B}$ in the region $r\ge a$ in terms of $I_0$.

(c)

To determine

The expression for the current $I$ in the circular cross section of radius $r\le a$ and centered at the cylinder axis, in terms of $I_0$.

(d)

To determine

The expression for the magnetic field $\overrightarrow{B}$ in the region $r\le a$.

(e)

To determine

The magnitude of magnetic field at $r=\delta$, $r=a$ and $r=2a$.