A Straight Wire Carries a Current of 40 a in a Uniform

question 80

Multiple Choice

A straight wire carries a current of 40 A in a uniform magnetic field (magnitude = 80 mT) . If the force per unit length on this wire is 2.0 N/m, determine the angle between the wire and the magnetic field.

• A) either 39° or 141°
• B) either 25° or 155°
• C) either 70° or 110°
• D) either 42° or 138°
• E) either 65° or 115°

Differentiate between short-run and long-run outcomes in perfect competition.

Identify the conditions for profit maximization in perfect competition.

Understand the relationship between price, marginal cost, and average total cost in determining firm efficiency.

Recognize the role of economic profits and losses in a perfect competitive market structure.

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