A Uniform Magnetic Field Is Directed into the Page

question 13

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