Basics of Electric Circuits

These flashcards cover essential concepts related to electric circuits, including definitions, characteristics of circuits, and the role of electric components.

electric device

A part of a circuit that uses electrical energy to do work, such as producing light, heat, or motion.

closed circuit

A complete circuit in which electric current flows continuously.

open circuit

An incomplete circuit in which electric current does not flow.

electric current

The movement of electrically charged particles through a conductor.

In which direction do electric charges move in a basic model of current?

From the negative terminal toward the positive terminal in a closed circuit.

voltage

The electrical potential energy difference between two places in a circuit.

How is voltage measured?

Voltage is measured in volts (V).

high voltage

Transfers more electric energy to devices in a circuit.

low voltage

Transfers less electric energy to devices in a circuit.

How can electrical energy be transformed in a circuit?

It can be converted into light energy, thermal (heat) energy, or other forms of energy.

voltage across a device indicates

It shows how much energy is transferred by that device in the circuit.

function of a switch in a circuit

A device used to open or close a circuit, controlling the flow of electric current.