Two Concentric Circular Wire Loops in the Same Plane Each

question 39

Multiple Choice

Two concentric circular wire loops in the same plane each carry a current.The larger loop as a current of 8.46 A circulating clockwise and has a radius of 6.20 cm.The smaller loop has a radius of 4.42 cm.What is the magnitude and direction of the current in the smaller loop if the total magnetic field at the center of the system is zero?

• A) 6.03 A CCW
• B) 6.03 A CW
• C) 12.8 A CCW
• D) 12.8 A CW

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Definitions:

Margin of Safety

The difference between actual or projected sales and the break-even point, used as a measure of risk reduction.

Contribution Margin Ratio

The percentage of sales that exceeds variable costs, showing how much revenue is available to cover fixed costs and generate profit.

Fixed Costs

Costs that remain constant regardless of a company's level of activity, including expenses like rent, salaries, and insurance.

Actual Sales

The real revenue generated from goods or services sold by a business, as opposed to projected or forecasted sales.