The electric P.E of an electron in an orbit at a distance rn from the positive charge_____________?
A. Ke2/rn
B. Ke2/rn2
C. ÀKe2/rn
D. ÀKe2/rn2
A. Ke2/rn
B. Ke2/rn2
C. ÀKe2/rn
D. ÀKe2/rn2