A Coiled Loop of Wire Is in the Field Region

question 23

Multiple Choice

A coiled loop of wire is in the field region between the poles of an electromagnet, with the axis of the coil aligned with the magnetic field. Which of the following things would NOT result in an induced EMF in the coil?

• A) Rotation of the coil about an axis perpendicular to the coil axis
• B) Pulling the coil partly out of the field region
• C) Increasing or decreasing the current in the electromagnet
• D) Flexing the coil and changing its shape, keeping the perimeter the same
• E) None of these choices will work.

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