At What Distance from the Central Axis of a Long

question 41

Multiple Choice

At what distance from the central axis of a long straight thin wire carrying a current of 5.0 A is the magnitude of the magnetic field due to the wire equal to the strength of the Earth's magnetic field of about 5.0 × 10^-5 T? (μ0 = 4π × 10^-7 T ∙ m/A)

• A) 1.0 cm
• B) 2.0 cm
• C) 3.0 cm
• D) 4.0 cm
• E) 5.0 cm

---

Definitions:

Superego

In psychoanalytic theory, the part of the personality that acts as a moral center, enforcing ethical conduct and societal norms.

Structural Model

A representation that outlines the arrangement and connectivity of components within a system or theory.

Iceberg Model

A metaphor used in psychology and other fields to illustrate that only a small part of a person's mind or situation is visible, while the majority is hidden beneath the surface.

Libido

A term used in psychoanalytic theory to denote the energy associated with sexual drives and desires.