A Circular Loop of Wire of Cross-Sectional Area 0

question 20

Multiple Choice

A circular loop of wire of cross-sectional area 0.12 m² consists of 200 turns, each carrying 0.50 A. It is placed in a magnetic field of 0.050 T oriented at 30° to the plane of the loop. What torque acts on the loop?

• A)0.25 m∙N
• B)0.52 m∙N
• C)2.5 m∙N
• D)5.2 m∙N
• E)25 m∙N

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Definitions:

Hausa City-States

Denotes a group of independent cities within what is now northern Nigeria, developed before the 19th century, each governed by its own ruler and known for their trade, military prowess, and Islamic scholarship.

Kano

A city in northern Nigeria, known as a commercial and cultural center, as well as for its historic significance in the trans-Saharan trade.

Gao

This term could refer to multiple contexts; it might denote a historical city in Mali, known for being an important trading center in the Sahel region.

Askia Muhammad

Refers to Askia Muhammad I, who was an emperor of the Songhai Empire in the late 15th and early 16th centuries, known for his military prowess and administrative reforms.