A Uniform Magnetic Field Is Directed into the Page

question 10

Multiple Choice

A uniform magnetic field is directed into the page. A charged particle, moving in the plane of the page, follows a clockwise spiral of decreasing radius as shown. A reasonable explanation is:

• A) the charge is positive and slowing down
• B) the charge is negative and slowing down
• C) the charge is positive and speeding up
• D) the charge is negative and speeding up
• E) none of the above

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