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Physics

Grade 12: Electricity and Magnetism

TermDefinition
Coulomb's law The magnitude of the electrostatic force exerted by one point charge (Q1) on another point charge (Q2) is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance (r) between them.
Electric field A region of space in which an electric charge experiences a force.
Electric field at a point The electric field at a point is the electrostatic force experienced per unit positive charge placed at that point.
Ohm's law The potential difference across a conductor is directly proportional to the current in the conductor at constant temperature.
Power The rate at which work is done.
EMF The maximum energy provided by a battery per unit charge passing through it.
rms for an alternating voltage The AC potential difference which dissipates/produces the same amount of energy as an equivalent DC potential difference.
rms for an alternating current The alternating current which dissipates/produces the same amount of energy as an equivalent direct current (DC).
Created by: StiKManLabs
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