FIGURE 29-10 -A Circular Loop of Wire Is Rotated at Constant Angular

question 111

Multiple Choice

FIGURE 29-10
-A circular loop of wire is rotated at constant angular speed about an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the orientation of the loop's axis of rotation if the induced emf is to be zero?

• A)Any horizontal orientation will do.
• B)It must make an angle of 45° to the vertical.
• C)It must make an angle of 60° to the vertical.
• D)It must be vertical.
• E)none of the given answers

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