Two Concentric Circular Wire Loops in the Same Plane Each

question 54

Multiple Choice

Two concentric circular wire loops in the same plane each carry a current. The larger loop has 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:

Output Per Worker

The average production or number of goods and services produced by an individual worker within a certain period.

Capital Cost Allowance

A tax deduction in some jurisdictions for depreciation of assets, reflecting the wear and tear or obsolescence of physical assets.

Declining Balance

A method of calculating depreciation for an asset, whereby the asset loses value at a decreasing rate over time.

GAAP

Generally Accepted Accounting Principles, which are a common set of accounting rules and standards used for financial reporting.