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Electric Potential (Voltage)
Electric potential energy per unit charge.
Electric Potential Difference
The work needed to move a positive test charge from one point to another divided by the magnitude of the test charge.
Volt (V)
Unit of electric potential difference, equivalent to joules per coulomb (J/C).
Equipotential
Positions where the electric potential difference is zero.
Capacitor
A device for storing electrical energy in an electric field.
Capacitance (C)
The constant that relates charge and potential difference, expressed in farads (F).
Joules (J)
The unit of work or energy in the International System of Units.
Electric Field (E)
A field around charged particles that exerts a force on other charged particles.
Positive Test Charge
A hypothetical charge used to measure electric potential and electric field.
Negative Plate
The plate in a capacitor that has a net negative charge.
Positive Plate
The plate in a capacitor that has a net positive charge.
Excess Electrons
Additional electrons present on an object when it is negatively charged.
Capacitance Formula
C = q/ΔV, where C is capacitance, q is charge, and ΔV is potential difference.
Electric Field (E)
A field around charged particles that exerts a force on other charged particles.
Electric Potential (Voltage)
Electric potential energy per unit charge.
