A Long, Straight Wire with 3

question 44

Multiple Choice

A long, straight wire with 3.0 A current flowing through it produces magnetic field strength 1.0 T at its surface. If the wire has a radius R, where within the wire is the field strength equal to 36% of the field strength at the surface of the wire? Assume that the current density is uniform throughout the wire. (μ₀ = 4π × 10^-7 T ∙ m/A)

• A) 0.36 R
• B) 0.060 R
• C) 0.64 R
• D) 0.030 R

---

Definitions:

Physical Environment

The external surroundings and conditions in which an organism lives, including natural and man-made environments.

Lev Vygotsky

A Russian psychologist known for his work on cognitive development, particularly the social development theory which emphasizes the role of social interaction in the development of cognition.

Social Mentoring

A supportive relationship where an experienced individual guides and assists another in social contexts, including personal development and networking.

Preoperational Stage

A stage in Piaget's theory of cognitive development, where children aged 2 to 7 years old develop memory and imagination, but do not yet think logically.