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What is the effect of increasing the magnitude of charges on electric potential energy?
Increases the electric potential energy.
What is the effect of decreasing the distance between charges on electric potential energy?
Increases the electric potential energy.
What is the effect of moving a +q charge from (0,a) to infinity?
The change in potential energy is $W = \frac{kq^2}{a}(\frac{1}{\sqrt{2}} - 1)$.
What is the effect of increasing the magnitude of charges on electric potential energy?
Increases the electric potential energy.
What is the effect of decreasing the distance between charges on electric potential energy?
Increases the electric potential energy.
What happens to the total energy in a closed system?
The total energy (kinetic + potential) remains constant (Conservation of Energy).
Define Electric Potential Energy.
Work done by an external force to bring charges from infinitely far apart to their current positions; stored energy ready to do work.
What is $U_E$ in the context of Electric Potential Energy?
Electric potential energy, measured in Joules (J).
Define 'q' in the Electric Potential Energy formula.
The charge of an object, measured in Coulombs (C).
What is 'r' in the Electric Potential Energy formula?
The distance between the charges, measured in meters (m).
Define Coulomb's constant (k).
A constant equal to $8.99 imes 10^9$ N⋅m²/C² or $\frac{1}{4 \pi \varepsilon_{0}}$.
Define $\varepsilon_0$.
Permittivity of free space constant ($8.85 imes 10^{-12}$ C²/N⋅m²).