an electron initially at rest is accelerated through a potential difference of 100 volts. find its final kinetic energy in electron volts?
To find the final kinetic energy of an electron, we need to use the formula:
Final kinetic energy (in electron volts) = q * ΔV
where q is the charge of the electron and ΔV is the potential difference.
The charge of an electron (q) is 1.6 x 10^-19 coulombs.
Given that the potential difference (ΔV) is 100 volts, we can now substitute these values into the formula:
Final kinetic energy (in electron volts) = (1.6 x 10^-19 C) * (100 V)
Calculating this multiplication, the units cancel out and we get the final result:
Final kinetic energy (in electron volts) = 1.6 x 10^-17 electron volts
Therefore, the final kinetic energy of the electron is 1.6 x 10^-17 electron volts.