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Physics Unit 5 (iSchool High at UP)

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Section 1

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Direct Current (DC)

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Date created

Mar 1, 2020

Cards (15)

Section 1

(15 cards)

Direct Current (DC)

Front

The movement of electrons in one direction.

Back

Coulomb's Law

Front

The more distance between two objects, the weaker the electrical force; electrical force > gravity.

Back

Potential Difference

Front

The difference between the electric potential of any two charges in an electrical system; expressed in volts, it is responsible for the flow of electricity in a system.

Back

Capacitor

Front

A device that accumulates and holds an electrical charge.

Back

Conductor

Front

A material that can move electrons throughout its mass with ease.

Back

Alternating Current (AC)

Front

An electrical current created through induction in a generator, which causes the electric potential to alternate one way and then back the other way; also used in transformers.

Back

Law of Conservation of Charge

Front

A law that states that the net charge in a closed system will always be zero

Back

Resistance

Front

A property of a conductor that opposes the passage of current through it; usually measured in ohms, it is equal to the voltage divided by the current.

Back

Ohm's Law

Front

V = IR *V is voltage; I is current; R is resistance

Back

Polarity

Front

The positive or negative state in which a body reacts to an electric, magnetic, or other field

Back

Electric Potential Energy

Front

The amount of energy that acts on a charge at a particular point in an electric field.

Back

Electric Potential

Front

The amount of electric potential energy that exists for a charge at any point in an electrical system; the electric potential energy divided by the charge at that point.

Back

Insulator

Front

A material of such low conductivity that the flow of current through it is near zero; material in a unit form designed to support a charged conductor and electrically isolate it.

Back

Farad

Front

The SI unit of capacitance; capacitors are rated according to _____, the SI unit that is a measurement of the ability to store charge.

Back

Conventional Current

Front

An electric current that flows from positive to negative.

Back