12.50: A spatially uniform electric field is constrained within the circular
z h vsp3/6(nzy1qj3b eregion of radius R as shown. 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 for
ev1( 6nq y3s/bj hp3zzce on the electron at the instant shown in the figure when the electron is moving up the plane of the page? Ignore gravity