An electron of mass me = 9.1 × 10−31 kg is accelerated in the uniform electric field E between  two parallel charged plates, There is no electric field outside of the plates. The electric field has a  magnitude E = 2.0 × 103 N/C and electron charge e = −1.6 × 10−19 C. The separation of the  plates is 1.5 cm and the electron is accelerated from rest near the negative plate and passes  through a tiny hole in the positive plate. Assume the hole is so small that it does not affect the  uniform field between the plates. What is its acceleration and with what speed does it leave the hole

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.