A Long Solenoid (1500 Turns/m) Carries a Current of 20

question 13

Multiple Choice

A long solenoid (1500 turns/m) carries a current of 20 mA and has an inside diameter of 4.0 cm. A long wire carries a current of 2.0 A along the axis of the solenoid. What is the magnitude of the magnetic field at a point that is inside the solenoid and 1.0 cm from the wire?

• A) 78 μT
• B) 55 μT
• C) 48 μT
• D) 68 μT
• E) 2.0 μT

---

Definitions:

Temporary Support

Short-term assistance offered to individuals or systems during periods of change or stress, aiming at stabilization.

Task

An activity or assignment that needs to be completed, often as part of a larger project or goal.

Ecological Approach

A perspective or method in various disciplines that emphasizes the importance of understanding organisms, including humans, in relation to their environment.

Microsystem

An ecological model's term for the immediate environment in which individuals interact and are directly influenced, such as family and school.