Wire Is Wound on a Square Frame, 30 Cm by 30

question 7

Multiple Choice

Wire is wound on a square frame, 30 cm by 30 cm, to form a coil of 7 turns. The frame is mounted on a horizontal shaft through its center (perpendicular to the plane of the diagram) , as shown in the figure. The coil is in clockwise rotation, with a period of 0.060 s. A uniform, horizontal, magnetic field of magnitude 0.40 T is present. At a given instant, the plane of the coil forms a 60° angle with the horizontal, as shown. At that instant, what is the magnitude of the emf induced in the coil?

• A) 13 V
• B) 23 V
• C) 2.1 V
• D) 3.6 V
• E) 26 V

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Definitions:

Short Run

A period in economics during which at least one input, such as plant size or capital, is fixed, limiting the capacity to adjust to changes in demand or production volume.

Inelastic Demand

A demand relationship in which a given percentage change in price results in a smaller percentage change in quantity sold.

Various Brands

A diversity of products or services offered under different trademarks by companies to cater to varying customer preferences.

Elastic Demand Curve

The elastic demand curve represents a situation where the quantity demanded for a good or service varies significantly as its price changes.