A Copper Penny Slides on a Horizontal Frictionless Table

question 11

Multiple Choice

A copper penny slides on a horizontal frictionless table. There is a square region of constant uniform magnetic field perpendicular to the table, as shown. Which graph correctly shows the speed v of the penny as a function of time t?

• A) I
• B) II
• C) III
• D) IV
• E) V

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