An Ideal Solenoid of Radius a Has N Turns Per $\phi$

question 7

Multiple Choice

An ideal solenoid of radius a has n turns per unit length and current I.The magnetic flux $\phi$ _B through any area completely inside the solenoid,centered on the solenoid axis but at a 45 $\degree$ angle to the axis,so that it touches the inside of the solenoid,as shown below,is

• A) \(\mu _ { 0 } \frac { \pi a ^ { 2 } } { 4 } n I\) .
• B) \(\mu _ { 0 } \frac { \pi a ^ { 2 } } { 2 } n I\) .
• C)\(\mu\)₀ \(\pi\)a²nI.
• D)2\(\mu\)₀ \(\pi\)a²nI.
• E)0.

---

Definitions:

Adjustment

An entry made in accounting records to correct or allocate transactions properly.

Service Company

A service company is a business that earns revenue through the provision of services, as opposed to selling physical products.

Merchandise Company

A business that purchases and sells goods, often retail or wholesale, as its primary activity.

Form 1120S

A tax document used in the United States to report the earnings, losses, and dividends of S corporation shareholders.