Electricity Flashcards

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Questions and Answers

What is the SI unit of measure for electrical resistance?

Ohm

What is the unit of measure for current?

Ampere

What is the SI unit of energy?

Joule

What is the SI unit of power?

Watt Signup and view all the answers

What is the SI unit of capacitance?

Farad Signup and view all the answers

What is the SI unit of electric charge?

Coulomb Signup and view all the answers

One ____ produces a current of 1 ampere through a resistance of 1 ohm.

volt Signup and view all the answers

What is voltage?

An electromotive force or potential difference. Signup and view all the answers

What is current?

The amount of charge that passes a point in one second. Signup and view all the answers

What is resistance?

The impedance to the flow of electric current. Signup and view all the answers

What is a circuit?

A complete loop where electricity can flow from start to finish. Signup and view all the answers

Electrons are involved in __________.

electricity Signup and view all the answers

A property of an elementary particle that determines the strength of its electric force with other particles that also have ______.

charge Signup and view all the answers

What is a conductor?

A substance that allows electricity to flow through it. Signup and view all the answers

What is an insulator?

A substance that does not allow electricity to flow. Signup and view all the answers

What is the inverse square relationship?

A relationship where a quantity is related to the reciprocal of the square of a second quantity. Signup and view all the answers

What is an electric field?

Force per unit charge (E = F/q). Signup and view all the answers

What is electric potential energy?

The work done in bringing a charged object from a reference location to a specific point. Signup and view all the answers

Electric potential is also known as ________.

voltage Signup and view all the answers

What is the SI unit of electric current?

Ampere Signup and view all the answers

What is Ohm's Law?

The resistance is equal to the voltage divided by the current. Signup and view all the answers

What is power in electric circuits?

The product of current and voltage. Signup and view all the answers

Plasma is an ionized gas that can conduct electricity. Energy is required to produce a ______.

plasma Signup and view all the answers

Capacitance is also a measure of the amount of electric potential energy stored (or separated) for a given electric potential. ____________.

Capacitance Signup and view all the answers

Study Notes

Electrical Units and Concepts

Ohm: SI unit for electrical resistance, where 1 ohm allows a current of 1 ampere with a potential difference of 1 volt.
Ampere (Amp): Unit measure for electric current; describes the flow rate of electric charge.
Joule: SI unit of energy; equivalent to 1 newton acting over a distance of 1 meter.
Watt: SI unit of power, defined as 1 joule per second.
Farad: The SI unit of capacitance, measuring a capacitor's ability to store charge.
Coulomb: SI unit of electric charge; represents the charge carried by 1 ampere over 1 second, or approximately 6.24 x 10^18 protons.
Volt: SI unit of electric potential, defined as joules per coulomb (J/C); relates to current and resistance through Ohm’s Law.
Voltage: The potential difference expressed in volts, driving current through a circuit.

Current and Resistance

Current: Flow of electric charge over time, measured in amperes, representing the amount passing through a point in one second.
Resistance: Impedance to electric current flow, measured in ohms; it is calculated as voltage divided by current (R = V/I).

Circuits and Electricity

Circuit: Complete path allowing electricity to flow continuously.
Electricity: Phenomena tied to electromagnetic force, primarily involving electron movement.
Charge: Property of elementary particles that defines electric force interaction, quantified in coulombs.

Conductors and Insulators

Conductor: Material (like metals) that permits the easy flow of electricity.
Insulator: Material (like ceramics) that resists the flow of electricity.

Relationships and Fields

Inverse Square Relationship: Quantity inversely proportionate to the square of another, such as gravitational and electrical forces based on distance.
Electric Field: Space around a charged object indicated by the force experienced per unit charge, measured in newtons per coulomb (E = F/q).

Potential Energy and Voltage

Electric Potential Energy: Work needed to move a charge within an electric field, measured in joules.
Electric Potential: Also known as voltage, defined as electric potential energy per unit charge (V = EPE/q).

Additional Definitions

Ampere: Current unit defined as 1 coulomb per second; related to magnetic force between parallel wires.
Ohm's Law: Principle stating resistance equals voltage divided by current (R = V/I).
Power: Rate of energy conversion, measured in watts or joules per second; calculated by multiplying current and voltage (P = IV).

Unique States of Matter

Plasma: Fourth state of matter where atoms lose electrons, forming an ionized gas capable of conducting electricity; energy is required for its creation.
Capacitance: Ability to store electric potential energy in a field; indicates how much energy a capacitor can store based on voltage.

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Test your knowledge of basic electrical terms with these flashcards. Each card includes a key term and its definition, covering essential concepts like ohms, amps, joules, and watts. Perfect for anyone studying electricity.