Field of a Circular Loop: Two Coaxial Circular Coils of Radius

question 4

Multiple Choice

Field of a circular loop: Two coaxial circular coils of radius R = 15 cm, each carrying 4.0 A in the same direction, are positioned a distance d = 20 cm apart, as shown in the figure. Calculate the magnitude of the magnetic field halfway between the coils along the line connecting their centers. (μ₀ = 4π × 10^-7 T ∙ m/A)

• A) 0.90 × T
• B) 3.9 × T
• C) 1.9 × T
• D) 6.3 × T
• E) 9.2 × T

---

Definitions:

Contiguity

A principle in psychology and learning theory that suggests that events experienced close together in time or space are likely to be associated with each other.

Contrapreparedness

An inability to associate a specific conditioned stimulus (CS) and a specific unconditioned stimulus (UCS) despite repeated conditioning experiences

Predictable Stimulus

A stimulus that occurs in a manner or pattern that can be anticipated, allowing organisms to anticipate and react accordingly.

Stimulus Substitution

A theory in classical conditioning suggesting that the conditioned stimulus acts as a substitute for the unconditioned stimulus, eliciting the same response.