A Circular Loop of Wire of Radius 10 Cm Carries

question 27

Multiple Choice

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:

Allosteric Site

A region on an enzyme that binds to molecules in the cell, resulting in a change in the enzyme's activity; not the active site where substrate molecules bind.

Tryptophan Operon

A segment of DNA in bacteria that regulates the production of tryptophan by switching the genes responsible for its synthesis on or off.

Active Repressor Protein

A protein that binds to specific DNA sequences to inhibit the transcription of certain genes, controlling gene expression.

Inactive RNA Polymerase

An RNA polymerase enzyme in a resting state that is not involved in the transcription of DNA into RNA.