Circuits
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An electrical circuit is formed when a complete conductive path connects a power source like a battery or outlet to electrical devices like light bulbs. A closed circuit allows electric current to flow through the path, while an open circuit interrupts the flow. Switches are used to open or close circuits and turn devices on or off. Schematic diagrams represent circuits using standardized symbols and show how all the circuit components are connected to depict the circuit's construction.
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Simple circuit diagram
This document provides an overview of series and parallel circuits. It defines a circuit as a closed loop that allows current to flow from a power source through a load. A series circuit has one path for current to flow through all loads sequentially. In a parallel circuit, there are multiple paths for current, so the current divides across branches while the voltage remains the same across each branch. Key differences between series and parallel circuits are explained, with current remaining constant in series but voltage constant in parallel.
Circuits
An electric circuit is a closed path that allows electrons to flow from an energy source and back. A closed circuit allows continuous electron flow, while an open circuit interrupts flow. Common circuit components include batteries, wires, switches, bulbs and resistors. Circuit diagrams use symbols to represent components and visualize connections before building real circuits. Series circuits have a single current path, so adding resistors increases total resistance and dims all bulbs. Parallel circuits provide multiple paths, so adding resistors decreases total resistance despite each path's resistance increasing.
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Series circuits have a single path for current to flow, so if one appliance fails the entire circuit is opened and current cannot flow to other appliances. Parallel circuits provide multiple current paths, allowing other appliances to remain lit if one fails since current can still flow through other paths. The key difference is that series circuits rely on a single current path, while parallel circuits provide alternatives.
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Circuits
An electric circuit is a closed path that allows electrons to flow from an energy source and back. A closed circuit allows continuous electron flow, while an open circuit interrupts flow. Common circuit components include batteries, wires, switches, bulbs and resistors. Circuit diagrams use symbols to represent components and visualize connections before building real circuits. Series circuits have a single current path, so adding resistors increases total resistance and dims all bulbs. Parallel circuits provide multiple paths, so adding resistors decreases total resistance despite each path's resistance increasing.
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This document provides an introduction to basic components of DC circuits. It discusses the four main component categories - conductors, loads, power supplies, and controllers. Conductors carry electricity through the circuit. Loads are components that use the supplied power. Power supplies provide energy to push electrons through the circuit. Controllers manage the circuit. The document explains what constitutes a complete versus incomplete circuit and provides examples of schematic symbols used to represent components in schematic diagrams, including those for batteries, wires, loads, and switches.
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Basic Circuit Elements:
- An electric circuit is an interconnection of electrical elements like batteries, resistors, capacitors, etc. linked to allow continuous electric current flow.
- Circuit elements cannot be broken down further and are defined by their voltage and current behavior.
- Circuit elements can be linear or non-linear, active or passive, unilateral or bilateral. Linear elements like resistors and capacitors maintain consistent properties with voltage/current changes, while non-linear elements like semiconductors do not. Active elements supply energy and passive elements receive/store/dissipate energy. Unilateral elements have varying impedances with current direction and bilateral elements do not.
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This document discusses the components of an electric circuit. It identifies the main components as a battery, conductor, switch, resistor, and bulb. It provides details on the function of each component: a battery supplies electric energy, a conductor allows electric current to flow, a switch controls current flow, a resistor regulates current, and a bulb converts current into light. The document aims to teach learners to identify circuit components, build circuits, and properly dispose of electronic waste.
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Circuits
- 1. Circuits
- 2. What are Circuits? • When plug and wires connect an electrical outlet to a string of light bulbs, electrical charges have a complete path to flow. • The bulb, electrical outlet, and wires form an Electrical Circuit.
- 3. Closed and open Circuits: • Closed Circuit: is a complete path. • Open Circuit: when there is no complete path. • The voltage source, whether a battery or an outlet, is always part of the conducting path of a closed circuit.
- 4. Switches interrupt the flow of charges in a circuit. • You use a switch to open or close a circuit, as you have probably done many times. Switches are used to turn lights on and off. You either close or open a circuit to turn a light on or off. • Electrons can move through the bar to reach the other side of the switch. If the metal bar on the switch is lifted, the switch is opened.
- 5. Schematic diagrams are used to represent Circuits. • A diagram that depicts the construction of an electric circuit or apparatus is called a schematic diagram. • All electric devices, from toasters to computers, can be described by schematic diagram.
- 6. Schematic diagrams use standard symbols. • Each element used in a piece of electrical equipment is represented by a symbol that reflects the elements construction or function. • The symbol in the schematic diagram that represents an open switch resembles the knife switch.