A Conducting Rod Whose Length Is ℓ = 25 Cm $\vec { B }$

question 58

Multiple Choice

A conducting rod whose length is ℓ = 25 cm is placed on a U-shaped metal wire that is connected to a lightbulb having a resistance of 8.0 Ω as shown in the figure.The wire and the rod are in the plane of the page.A constant uniform $\vec { B }$ field of 0.40 T in magnitude is applied perpendicular to and out of the paper.An external applied force moves the rod to the left with a constant speed of 12 m/s.What are the magnitude and direction of the induced current in the circuit?

• A)150 mA clockwise
• B)150 mA counterclockwise
• C)34 mA counterclockwise
• D)34 mA clockwise
• E)100 mA clockwise

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Definitions:

Zero Economic Profit

A situation where a firm's total revenue is exactly equal to its total opportunity costs, indicating no excess returns over the cost of capital.

Long Run

A period in which all factors of production and costs are variable, allowing for adjustments in production to meet changes in the market or economy.

Price-taker Market

A market condition where individual buyers or sellers have no power to influence the price of the good or service, typically in a perfectly competitive market.

Average Total Cost

The total cost of production divided by the quantity produced, encompassing both fixed and variable costs.