A Long Straight Wire Is Parallel to One Edge and Is

question 56

Multiple Choice

A long straight wire is parallel to one edge and is in the plane of a single-turn rectangular loop as shown. If the loop is changing width so that the distance x changes at a constant rate of 4.0 cm/s, what is the magnitude of the emf induced in the loop at an instant when x = 6.0 cm? Let a = 2.0 cm, b = 1.2 m, and I = 30 A.

• A)5.3 μV
• B)2.4 μV
• C)4.8 μV
• D)2.6 μV
• E)1.3 μV

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Definitions:

Net Profit Margin

A profitability ratio calculated as net income divided by revenue, expressed as a percentage, indicating how much profit a company generates from its total sales.

Quality of Income

A measure of how easily accounting income can be converted to cash, indicating the reliability of earnings.

Gross Profit Percentage

A financial metric that represents the proportion of money left over from revenues after accounting for the cost of goods sold, expressed as a percentage.

Cost of Goods Sold

The direct costs attributable to the production of the goods sold by a company.