A charged particle with a positive net electric charge travels with a velocity of 2×107 m.s-1 in the positive -direction between two plates of a parallel plate capacitor. A uniform magnetic field of 2 mT that is directed into the page also exists in the same location as the capacitor.
a. If the parallel plates of the capacitor are separated by 3 cm, determine the voltage required over the plates in order to stop any deflection of the particle.
V = __________ V
b. If there is no deflection, determine whether the top plate or bottom plate is positive.
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