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Differentiate between positive and negative electric potential energy.

Positive: Like charges, requires work to bring together. Negative: Unlike charges, attract each other, requires work to separate.

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Differentiate between positive and negative electric potential energy.

Positive: Like charges, requires work to bring together. Negative: Unlike charges, attract each other, requires work to separate.

How is electric potential energy related to electric potential (voltage)?

Electric potential energy is the energy a charge has due to its position in an electric field; related to electric potential (voltage) by $U_E = qV$ .

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 $W = \frac{kq^2}{a}(\frac{1}{\sqrt{2}} - 1)$ .

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).