Electrostatics Question 393
Question: How much kinetic energy will be gained by an $ \alpha - $ particle in going from a point at $ 70V $ to another point at $ 50V $ [RPET 1997]
Options:
A) $ 40eV $
B) $ 40keV $
C) $ 40MeV $
D) $ 0eV $
Show Answer
Answer:
Correct Answer: A
Solution:
$ KE=q(V _{1}-V _{2})=2\times 1.6\times {{10}^{-19}}\times (70-50)=40eV $
