An electron of mass M kg and charge e coulomb travels from rest through a potential difference of V volts. The final energy in joules would be
Detailed Explanation:
When a charged particle accelerates through a potential difference V, the work done by the electric field equals W = charge × voltage = eV joules.
Since the electron starts from rest, all this work converts into kinetic energy, making the final energy = eV joules. The mass M determines the final velocity but does not appear in the energy equation.
Question 5 of 6 Work, Power and Energy
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