An Overhead Electric Power Line Carries a Maximum Current of 125

question 56

Multiple Choice

An overhead electric power line carries a maximum current of 125 A. What is the magnitude of the maximum magnetic field at a point 4.50 m directly below the power line?

• A)5.56 × 10^-6 T
• B)1.75 × 10^-5 T
• C)3.49 × 10^-5 T
• D)4.69 × 10^-4 T
• E)7.95 × 10^-3 T

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Definitions:

Concrete Operational

A stage in Piaget's theory of cognitive development (roughly ages 7-11) where children gain the ability to think logically about concrete events.

Cognitive Development

Cognitive development refers to the process by which a person's ability to think, understand, and learn evolves over time.

Jean Piaget

A Swiss psychologist known for his pioneering work in child development, particularly his theory of cognitive development.

Hygiene Hypothesis

The theory that a lack of early childhood exposure to infectious agents, symbiotic microorganisms, and parasites increases susceptibility to allergic diseases by suppressing natural development of the immune system.