A Coil Is Wrapped with 300 Turns of Wire on the Perimeter

question 27

Multiple Choice

A coil is wrapped with 300 turns of wire on the perimeter of a circular frame (radius = 8.0 cm) . Each turn has the same area, equal to that of the frame. A uniform magnetic field is turned on perpendicular to the plane of the coil. This field changes at a constant rate from 20 to 80 mT in a time of 20 ms. What is the magnitude of the induced emf in the coil at the instant the magnetic field has a magnitude of 50 mT?

• A) 24 V
• B) 18 V
• C) 15 V
• D) 10 V
• E) 30 V

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Definitions:

Body Dissatisfaction

A person's negative perception of the appearance of their own body, often leading to severe emotional distress and unhealthy behaviors.

Egocentrism

The incapacity to distinguish one's own viewpoint from that of another person.

Hypothetical Thinking

The cognitive process involved in formulating and considering imaginary or "what if" scenarios, not restrained by current reality.

Deductive Reasoning

The practice of deriving a conclusion from the unification of multiple assertions believed to be true.