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Question: How much kinetic energy will be gained by an \(\alpha -\)particle in going from a point at 70 V to a...

How much kinetic energy will be gained by an α−\alpha -particle in going from a point at 70 V to another point at 50 V

A

40 Ev

B

40 keV

C

40 MeV

D

0 Ev

Answer

40 Ev

Explanation

Solution

Kinetic energy K=QΔVK = Q\Delta V ⇒\Rightarrow K=(2e)(70−50)V=40eVK = (2e)(70 - 50)V = 40eV