Haikou a2 Driver Recruitment Information

A, the potential decreases along the electric field line, so the potential of electrode A 1 is lower than that of electrode A2, so A is wrong;

B. When the electron moves from P to R, when it moves from low potential to high potential, the electric field force does positive work, the kinetic energy increases, and the electric potential energy decreases, so B error D is correct;

C, where equipotential lines are dense, electric field lines are dense, so the electric field lines at point Q are denser than those at point R, so the electric field intensity at point Q is greater than that at point R, so C is wrong.

Therefore, choose: d.