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

question 65

Multiple Choice

An ideal solenoid of radius a has n turns per unit length and current I.The magnetic flux $\phi$ _B through any circular area of radius a inside the solenoid,centered on and perpendicular to the solenoid axis 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.

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Definitions:

Blood Pressure

The force exerted by circulating blood on the walls of blood vessels, often measured as an indicator of heart health.

Cardioregulatory Center

A region of the brain, specifically in the medulla oblongata, that regulates heart rate and blood pressure by coordinating the autonomic nervous and the cardiovascular systems.

Vasodilator Substance

Chemicals that relax and expand blood vessels, increasing blood flow and decreasing blood pressure.

Epinephrine

Hormone (amino acid derivative) similar in structure to the neurotransmitter norepinephrine; major hormone released from the adrenal medulla; increases cardiac output and blood glucose levels; also called adrenaline.