Two Coaxial Circular Coils of Radius R = 15 Cm,each

question 6

Multiple Choice

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.

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

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Definitions:

Quantity Variance

A measure used in budgeting and accounting to compare the actual quantity of materials or products used to the expected amount under standard costing.

Cost Variance

The difference between the expected cost of a project or production and the actual cost.

Price Variance

The difference between the actual price paid for something and its standard or expected cost.

Quantity Variance

The difference between expected and actual quantities used in production, affecting cost and efficiency.