A Particle with Charge Q and Mass M Is Moving $\pi$

question 33

Multiple Choice

A particle with charge q and mass m is moving with speed v in the +x direction enters a magnetic field of strength B pointing in the +y direction. The work done by the magnetic force on the particle as it travels one semi-circle is

• A) \(\pi\)mqvB
• B) \(\pi\)mv²
• C) \(\pi\)qvB
• D) zero
• E) \(\pi\)mv/qB