A Flat Circular Loop of Wire Is in a Uniform $0.30 \mathrm {~T}$

question 158

Multiple Choice

A flat circular loop of wire is in a uniform magnetic field of $0.30 \mathrm {~T}$ . The diameter of the loop is $1.0$ $\mathrm { m }$ , and a 2.0-A current flows in it. What is the magnitude of the magnetic torque on the loop when the plane of the loop is parallel to the magnetic field?

• A) \(0.00 \mathrm {~N} \cdot \mathrm { m }\)
• B) \(0.47 \mathrm {~N} \cdot \mathrm { m }\)
• C) \(0.52 \mathrm {~N} \cdot \mathrm { m }\)
• D) \(0.41 \mathrm {~N} \cdot \mathrm { m }\)

---

Definitions:

Option Payoffs

The potential return or outcomes from holding or exercising an options contract.

Call Profits

Profits realized from exercising call options, where the investor has the right to buy an asset at a predetermined price before the option expires.