A Flat Circular Coil Has 200 Identical Loops of Very $\vec { B }$

question 104

Multiple Choice

A flat circular coil has 200 identical loops of very thin wire.Each loop has an area of 0.12 m² and carries 0.50 A of current.This coil is placed in a $\vec { B }$ field of 0.050 T oriented at 30° to the plane of the loop.What is the magnitude of the magnetic torque exerted on the coil?

• A)0.25 N ∙ m
• B)0.52 N ∙ m
• C)2.5 N ∙ m
• D)5.2 N ∙ m

---

Definitions:

Complimentary Close

A polite phrase used to end a letter or email, positioned before the sender's name, such as "Sincerely" or "Best regards."

Signature Block

A predefined area in documents and emails where an individual’s signature, contact information, and/or titles are placed.

Business Letter

A formal document used for communication between companies, or between a company and its clients, customers, or other external parties.

Multiple Cells

Refers to selecting or working with more than one cell at a time in spreadsheet software, for purposes like formatting or data entry.