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please help me with this question on KE?
How much kinetic energy will an electron gain (in joules and eV) if it accelerates through a potential difference of 23,000 V in a TV picture tube?
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- TwixterLv 41 decade agoFavorite Answer
An electron has a charge q = -1.6 x 10^ -19 C.
Voltage is defined as the electric potential energy per charge
V = PE/q.
Therefore, PE = Vq. This energy is converted to KE as it accelerates.
KE = Vq = 23,000*(1.6 x 10^ -19)
KE = 3.68 x 10^ -15 J
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