An electron with charge -e and mass m travels at a speed v in a plane
perpendicular to a magnetic field of magnitude B. The electron follows a
circular path of radius R. In a time, t, the electron travels halfway around the
circle. What is the amount of work done by the magnetic field? step by step
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Answer:
zero
Explanation:
work done by magnetic field is zero because
force is perpendicular to velocity of the particle
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