Question

A charge q moves from point A to point B. The potential energy of the charge at point A is 5.3 _ 10-10 joules and at point is B is 3.1 _ 10-10 joules. If the kinetic energy of the charge at point A is zero, what is the kinetic energy at point B?
Select one of the options below as your answer:

A.
8.4 _ 10-10 joules
B.
5.3 _ 10-10 joules
C.
3.1 _ 10-10 joules
D.
2.2 _ 10-10 joules
E.
1.5 _ 10-10 joules

Answer 1

D is the answer :D hope it helps

Answer 2

The change in electric potential energy will be converted to kinetic energy; thus:
K.E = 5.3 x 10⁻¹⁰ - 3.1 x 10⁻¹⁰
K.E = 2.2 x 10⁻¹⁰ Joules
Option D is correct.