Post on 13-Dec-2015
Capacitance - Capacitance - The The property of a capacitor or condenser property of a capacitor or condenser that permits it to receive and retain that permits it to receive and retain
an electrical charge.an electrical charge.
Circuit – Circuit – A source, A source, resistance, and path to carry a resistance, and path to carry a
flow from the source to the flow from the source to the resistance and back to the resistance and back to the source. An example is an source. An example is an
electrical circuit. The wires electrical circuit. The wires (path) allow electricity from the (path) allow electricity from the
batter (source) to flow to a batter (source) to flow to a headlamp (resistance) and back headlamp (resistance) and back
to the battery.to the battery.
Conductor –Conductor –Any material Any material that can form a path for that can form a path for
electrical current.electrical current.
Voltage - Voltage - the rate at the rate at which energy is drawn from a which energy is drawn from a source that produces a flow of source that produces a flow of
electricity in a circuit;electricity in a circuit;
Ohms – Ohms – Unit of Unit of measurement for resistance to measurement for resistance to the flow of electric current in a the flow of electric current in a
given unit or circuit.given unit or circuit.
Current – Current – The movement The movement of free electrons in a conductorof free electrons in a conductor
Resistance - Resistance - The The measure of opposition to measure of opposition to electrical flow in a circuit.electrical flow in a circuit.
Electromagnetism - Electromagnetism - The physics of the The physics of the
electromagnetic field: a field electromagnetic field: a field which exerts a force on particles which exerts a force on particles
that possess the property of that possess the property of
electricelectric
Electromotive Electromotive force (EMF) - force (EMF) - voltage: the rate at which voltage: the rate at which
energy is drawn from a source energy is drawn from a source that produces a flow of that produces a flow of
electricity in a circuit; expressed electricity in a circuit; expressed
in voltsin volts
Induction – Induction – The The imparting of electricity to an imparting of electricity to an
object by magnetic fields.object by magnetic fields.
Insulator - Insulator - a material a material such as glass or porcelain with such as glass or porcelain with negligible electrical or thermal negligible electrical or thermal
conductivityconductivity
Ohm’sOhm’s law – law – Formula for Formula for computing unknown voltage, computing unknown voltage,
resistance, or current in a circuit resistance, or current in a circuit by using two known factors to by using two known factors to
find the unknown value.find the unknown value.
Amperage - Amperage - the the strength of an electrical current strength of an electrical current
measured in amperesmeasured in amperes
Parallel circuit – Parallel circuit – An An electrical circuit that has two or electrical circuit that has two or more resistance units wired so more resistance units wired so that current can flow through that current can flow through
them at the same time.them at the same time.
Potential Energy - Potential Energy - the mechanical energy that a the mechanical energy that a
body has by virtue of its body has by virtue of its
position; stored energyposition; stored energy
Semiconductors - Semiconductors - A A substance, such as silicon, that substance, such as silicon, that acts as a conductor or insulator, acts as a conductor or insulator,
depending on its operating depending on its operating condition and application.condition and application.
Series Circuit – Series Circuit – A A circuit with only one path for circuit with only one path for
current to flow.current to flow.
Series Parallel Series Parallel circuit – circuit – A circuit in which A circuit in which a series and parallel circuits are a series and parallel circuits are
combined.combined.
Valence ring - Valence ring - The The outermost orbital ring of outermost orbital ring of
electrons in an atom.electrons in an atom.