12.50: A spatially uniform electric field is constrain
b+bw1 g,u *hgc(6tbnj bvze f5h *kf:/ed within the circular region of radius R as shown. The field is directed out of the pl
bhj6f+tg cbzb,f5n*buwk(1e* / v :gh ane of the page and its strength is decreasing uniformly with time. Which one of the following choices best represents the direction of the Lorentz force on the electron at the instant shown in the figure when the electron is moving up the plane of the page? Ignore gravity