LAST NA TO PHYSICS!!!!!!

Current

Amount of charge flowing in a wire at a certain area per unit time.

Electric field

A field around charged particles that affects the movement of other charged particles.

Ampere (A)

Unit of electric current equivalent to the flow of one coulomb of charge per second.

Conventional current

Current that flows from the positive side back to the negative side.

Electron flow

Current that flows from negative to positive.

Direct Current (DC)

Electric current that flows in one direction.

Alternating Current (AC)

Electric current that changes direction periodically.

Resistance

Opposition of a material to the flow of charge carriers.

Ohm

Unit of resistance equivalent to voltage per ampere.

Voltage

Potential difference required to move charge from one point to another.

Electromotive Force (EMF)

The maximum potential difference between two terminals of a battery when no current is flowing.

Ohm's Law

Law stating that current is directly proportional to voltage and inversely proportional to resistance.

Electric work

Amount of energy required to transfer a charge through a potential difference.

Joule

Unit of work or energy equivalent to one watt of power used for one second.

Electric power

Rate at which energy is delivered as it carries charge through a potential rise.

Watt

Unit of power equivalent to one joule per second.

Resistor

Device that contributes significant resistance to the flow of charge.

Resistors in Series

Configuration where current flows through two or more resistors connected in line.

Resistors in Parallel

Configuration where several resistors are connected between nodes, allowing for multiple paths for current.

Back electromotive force (Back-EMF)

Voltage generated during the operation of a rotating machine.

Transformer

Device that transfers electrical energy through electromagnetic induction.