- #1
moenste
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- 12
Homework Statement
An α-particle accelerated between a pair of parallel plates in a vacuum tube acquires a kinetic energy of 103 eV. What is the potential difference between the plates?
Answer: 500 V
2. The attempt at a solution
Well, it's 1000 / 2 = 500 V because there are two plates. But I am not sure whether this is the right logic.
Also KE = e * V. If we use this, we have (1000 * 1.6 * 10-19) J = 1.6 * 10-19 * V and so V = 1000 V. And not 500 V as in the answer.
Is it correct to just divide 1000 by 2 and get 500 V and that is the answer in this case?
Thanks in advance!