Field of a Circular Loop: a Circular Loop of Wire

question 7

Multiple Choice

Field of a circular loop: A circular loop of wire of radius 10 cm carries a current of 6.0 A. What is the magnitude of the magnetic field at the center of the loop? (μ₀ = 4π × 10^-7 T ∙ m/A)

• A) 3.8 × 10^-5 T
• B) 3.8 × 10^-7 T
• C) 1.2 × 10^-5 T
• D) 1.2 × 10^-7 T
• E) 3.8 × 10^-8 T

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Definitions:

Abundant Silica

The presence of a high concentration of silicon dioxide in rocks or magma, which affects their viscosity and melting point.

Less Viscous

Refers to a substance's decreased resistance to flow, implying it moves more freely compared to more viscous materials.

Magma Volatile

Gases and other volatile substances that are dissolved in magma and can affect its viscosity and eruption style.

Chemistry

The scientific branch that studies the composition, structure, properties, and change of matter.