12.50: A spatially uniform electric field is constrained wit
*w4 (*.s;zcbnozrnlt/xvsm 2 hin the circular region of radius R as shown. The field is directed out of the plane of the
l*bs( v;/ cmzzr 24t*nnswx.o 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