Electric Circuits Overview

An electric circuit represents the path for transmitting electric current.

A battery or generator provides energy to the charged particles constituting the current.

Resistors, transistors and electronic components.

<p>Direct-current circuit</p> Signup and view all the answers

<p>A direct-current circuit carries current that flows only in one direction. An alternating-current circuit carries current that pulsates back and forth many times each second, as in most household circuits.</p> Signup and view all the answers

<p>A series circuit comprises a path along which the whole current flows through each component.</p> Signup and view all the answers

<p>A parallel circuit comprises branches so that the current divides and only part of it flows through any branch.</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>True</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>An appliance draws a different amount of current according to its power requirements.</p> Signup and view all the answers

<p>Connecting batteries in parallel provides greater current than a single battery, but the voltage is the same as for a single battery.</p> Signup and view all the answers

<p>These components within a single device such as a radio is also an electric circuit.</p> Signup and view all the answers

<p>A path for transmitting electric current.</p> Signup and view all the answers

<p>A stream of charged particles, such as electrons or ions, moving through an electrical conductor or space.</p> Signup and view all the answers

<p>A generator converts motive power (mechanical energy) into electrical power for use in an external circuit.</p> Signup and view all the answers

<p>Any basic discrete device or physical entity in an electronic system used to affect electrons or their associated fields.</p> Signup and view all the answers

<p>Resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses.</p> Signup and view all the answers

<p>A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power.</p> Signup and view all the answers

<p>An electric current that is uni-directional, so the flow of charge is always in the same direction.</p> Signup and view all the answers

<p>Alternating current is an electric current which periodically reverses direction and changes its magnitude continuously with time.</p> Signup and view all the answers

<p>Voltage is the pressure from an electrical circuit's power source that pushes charged electrons (current) through a conducting loop, enabling them to do work such as illuminating a light.</p> Signup and view all the answers

<p>Potential difference is the difference in the amount of energy that charge carriers have between two points in a circuit.</p> Signup and view all the answers

<p>A machine which assists in household functions.</p> Signup and view all the answers

<p>A verb that indicates an action that is completed in the past.</p> Signup and view all the answers

<p>Regular past participles are formed by adding -ed to the base form of the verb, while irregular past participles have special forms that are not predictable.</p> Signup and view all the answers