Electric Potential - AP Physics C: Electricity and Magnetism

$V = 0$. Standard reference point for potential calculations.

Volt (V). Standard SI unit for electric potential difference.

$W = q \times \triangle V$. Work equals charge times potential difference.

Charges are infinitely separated. No interaction when charges infinitely far apart.

$V = 0$. Symmetric geometry cancels dipole contributions.

Potential energy remains constant. No work done moving along constant potential.

Inversely proportional to distance, $V \thicksim \frac{1}{r}$. Coulomb potential decreases with distance.

$V = \frac{k}{r} \times (q_1 + q_2 + ... + q_n)$. Scalar sum of individual charge contributions.

$\triangle V = \frac{q}{C}$. Voltage across capacitor depends on stored charge.

$W = -\triangle U$. Work by field equals negative change in potential energy.

$V = 0$. Standard reference point for potential calculations.

$C = \frac{q}{V}$. Capacitance defined as charge per unit voltage.

$W = q \times \triangle V$. Work equals charge times potential difference.

Volt (V). Standard SI unit for electric potential difference.

$E = -\nabla V$. Field points in direction of steepest potential decrease.

$U = \frac{1}{2}C \times V^2$. Energy stored in capacitor using voltage squared.

$U = q \times E \times d$. Energy equals charge times field strength times displacement.

A surface where the electric potential is constant. All points have identical potential value.

$U = q \times V$. Energy of charge placed in existing potential.

Reference point for potential energy calculations. Arbitrary zero point for energy measurements.

$E = -\nabla V$. Electric field is negative gradient of potential.

$U = q \times V$. Potential energy equals charge times potential.

$\triangle U = q \times \triangle V$. Energy change proportional to potential difference.

$U = -p \times E \times \text{cos}(\theta)$. Energy depends on dipole orientation in field.

Energy due to the positions of charges in an electric field. Energy from charge positions in electric field.

$V = \frac{k \times q}{r}$. Potential from a single source charge at distance $r$.

Sum of potential energies of all pairs. Total system energy from all charge interactions.

$\triangle V = E \times d$. Simple relation for uniform field geometry.

Constant throughout the conductor. No electric field inside conductor in equilibrium.