12.50: A spatially uniform electric field is constraine
a gz *drci)l 5idm3ryn92lt0 xwt;g 4+d within the circular region of radius R as shown. The field is directed out of the plane of the p
a il 53lrdry tx;gz0m*dtg in2+4wc9)age 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