Q3. Point charge q₁ = 2.0 nC is located at (0, 0). a) What is the electric potential at point A (2.0 cm,0)? b) What is the electric potential at point B (3.0 cm, 0)? c) What is the change of electric potential from A to B? d) What is the change of electric potential energy for a proton when it moves from A to B? e) What is the change of electric potential energy for an electron when it moves from A to B? f) A charge q2 is released at rest at point A and moving toward B with an increasing speed. Is q2 a proton or electron? What is its kinetic energy and speed when it reaches point B? mproton = 1.67 x 10-27 kg, melectron = 9.11 x10-31 kg,

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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.