12.50: A spatially uniform elec
-rpi0xj 4w1u6:qp h sb:bvg6mtric field is constrained within the circular region of radius R as shown.
:wi-bjqv r6 :mhxp4 6pb01sgu The field is directed out of the plane 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